1 00:00:01,280 --> 00:00:04,200 Speaker 1: Welcome to Stuff you Missed in History Class from how 2 00:00:04,280 --> 00:00:14,440 Speaker 1: Stuff Works dot com. Hello, and welcome to the podcast. 3 00:00:14,600 --> 00:00:18,119 Speaker 1: I am Tracy Vie Wilson and I and you may 4 00:00:18,200 --> 00:00:21,640 Speaker 1: have never heard of today's subject, but Avicenna was one 5 00:00:21,680 --> 00:00:26,840 Speaker 1: of the first and probably the most influential Islamic philosopher scientists. 6 00:00:27,360 --> 00:00:31,920 Speaker 1: He's listed among the great philosophers in Dante's Inferno, and 7 00:00:32,120 --> 00:00:34,839 Speaker 1: in the prologue to the Canary Tales. The doctor of 8 00:00:34,960 --> 00:00:37,720 Speaker 1: physic who was in the party has studied his work. 9 00:00:38,280 --> 00:00:40,600 Speaker 1: There's also a portrait of him hanging in the hall 10 00:00:40,800 --> 00:00:43,720 Speaker 1: of the Faculty of Medicine in the University of Paris. 11 00:00:44,479 --> 00:00:48,080 Speaker 1: He had this expansive, brilliant knowledge, and he was so 12 00:00:48,240 --> 00:00:51,160 Speaker 1: methodical and systematic, and the way that he wrote down 13 00:00:51,159 --> 00:00:55,240 Speaker 1: in cataloged information that his work in medicine became sought 14 00:00:55,320 --> 00:01:00,000 Speaker 1: after basically all over the place. He influenced the field 15 00:01:00,120 --> 00:01:03,680 Speaker 1: of medicine throughout the Islamic and Christian medieval worlds, and 16 00:01:03,840 --> 00:01:07,680 Speaker 1: his influence in Europe in the field of medicine lasted 17 00:01:07,760 --> 00:01:11,360 Speaker 1: well into the seventeenth century, to the point that schools 18 00:01:11,400 --> 00:01:15,800 Speaker 1: based their entire medical curricula on his writings. He was 19 00:01:15,840 --> 00:01:19,880 Speaker 1: also one of the most important philosophers in history. His work, 20 00:01:19,920 --> 00:01:22,880 Speaker 1: which was written mostly in Arabic, was rooted in Islam, 21 00:01:22,959 --> 00:01:27,679 Speaker 1: along with Aristotelian and neo Platonist philosophy in the Muslim world. 22 00:01:28,000 --> 00:01:32,319 Speaker 1: This philosophy continues to be studied today, and the fact 23 00:01:32,360 --> 00:01:36,400 Speaker 1: that Avicenna was influential to both Christians and Muslims makes 24 00:01:36,480 --> 00:01:42,120 Speaker 1: him really unique among ancient philosophers and scholars of his time. Today, 25 00:01:42,200 --> 00:01:46,560 Speaker 1: his work exists in more than two hundred commentaries, annotations 26 00:01:46,640 --> 00:01:50,960 Speaker 1: of bridgements, and translations. So, as we usually do, will 27 00:01:50,960 --> 00:01:54,560 Speaker 1: start at the beginning UH and then Farsi. His name 28 00:01:54,640 --> 00:01:58,960 Speaker 1: is actually Ibn Sina. In Arabic, it's Abu al al Hussain. 29 00:01:59,200 --> 00:02:04,520 Speaker 1: Ibn Sina. Avicenna is actually the medieval latinization of his name. 30 00:02:04,680 --> 00:02:07,840 Speaker 1: We're calling him that instead of calling him even Sina 31 00:02:08,280 --> 00:02:13,600 Speaker 1: because the overwhelming preponderance of information about him, regardless of 32 00:02:13,840 --> 00:02:17,000 Speaker 1: what culture it's written from, UH calls him that. He 33 00:02:17,080 --> 00:02:19,400 Speaker 1: became known by that name a very very long time ago. 34 00:02:20,120 --> 00:02:24,400 Speaker 1: He was born around nine eighty in a village near Bukara, Iran, 35 00:02:24,840 --> 00:02:29,480 Speaker 1: which is now in Uzbekistan in Central Asia. Bukara is 36 00:02:29,520 --> 00:02:32,640 Speaker 1: in south central Uzbekistan at a river delta, and it 37 00:02:32,720 --> 00:02:35,880 Speaker 1: lay along the Silk Road. Today its center is a 38 00:02:35,960 --> 00:02:39,040 Speaker 1: UNESCO World Heritage Site, and at the time it was 39 00:02:39,080 --> 00:02:42,400 Speaker 1: the capital, and it was an intellectually rich place to 40 00:02:42,440 --> 00:02:45,360 Speaker 1: grow up. This was also the fourth century of the 41 00:02:45,560 --> 00:02:48,320 Speaker 1: Islamic calendar, and this part of the world was really 42 00:02:48,360 --> 00:02:52,280 Speaker 1: flourishing in knowledge and intellect at this point. His father 43 00:02:52,520 --> 00:02:55,520 Speaker 1: was a governor and a scholar as well, and Avicenna 44 00:02:55,639 --> 00:02:58,680 Speaker 1: was a very bright and gifted child, and he claimed 45 00:02:58,720 --> 00:03:01,480 Speaker 1: to have memorized the higher Koran by the time he 46 00:03:01,560 --> 00:03:05,360 Speaker 1: was ten years old. His father's position and the number 47 00:03:05,400 --> 00:03:08,800 Speaker 1: of libraries and scholars where they lived meant that his 48 00:03:08,880 --> 00:03:12,960 Speaker 1: precociousness was really encouraged and nourished, and much of his 49 00:03:13,040 --> 00:03:17,040 Speaker 1: early study was an Aristotilian philosophy. But he surpassed his 50 00:03:17,080 --> 00:03:19,800 Speaker 1: teachers when he was quite young, and so he furthered 51 00:03:19,840 --> 00:03:22,600 Speaker 1: his education on his own once they no longer had 52 00:03:22,639 --> 00:03:25,239 Speaker 1: anything they could teach him. At the age of sixteen, 53 00:03:25,280 --> 00:03:29,040 Speaker 1: he turned from studying philosophy to studying medicine, which was 54 00:03:29,160 --> 00:03:33,040 Speaker 1: a discipline that he said he found extremely easy. And 55 00:03:33,080 --> 00:03:35,480 Speaker 1: when he was still quite young, the Sultan of Bukara, 56 00:03:35,640 --> 00:03:38,360 Speaker 1: the city where he was living, got sick and the 57 00:03:38,400 --> 00:03:41,520 Speaker 1: court physicians were not able to cure him, but Avicenna 58 00:03:41,640 --> 00:03:45,000 Speaker 1: did cure him, but as a reward, the Sultan gave 59 00:03:45,080 --> 00:03:47,839 Speaker 1: him access to the royal library, which opened up all 60 00:03:48,040 --> 00:03:52,320 Speaker 1: kinds of avenues for his own personal study. Getting access 61 00:03:52,360 --> 00:03:54,720 Speaker 1: to books and knowledge through his practice of medicine for 62 00:03:54,800 --> 00:03:58,320 Speaker 1: wealthy patrons actually became a pattern that he repeated throughout 63 00:03:58,320 --> 00:04:01,160 Speaker 1: his life. The self taught knowledge that he got from 64 00:04:01,200 --> 00:04:03,480 Speaker 1: all this was so broad that he also claimed to 65 00:04:03,520 --> 00:04:06,200 Speaker 1: have mastered all of the sciences by the age of eighteen. 66 00:04:07,680 --> 00:04:13,560 Speaker 1: Brilliant slash a little egotistical yes that comes up often 67 00:04:14,640 --> 00:04:17,679 Speaker 1: and writing about him that in addition to being extremely smart, 68 00:04:17,800 --> 00:04:20,040 Speaker 1: he knew he was extremely smart and could be kind 69 00:04:20,040 --> 00:04:22,960 Speaker 1: of conceited about it. Uh So, when he was a 70 00:04:23,000 --> 00:04:26,040 Speaker 1: young man, his father died and he for a while 71 00:04:26,200 --> 00:04:29,839 Speaker 1: held an administrative post. It's possible that he succeeded his 72 00:04:29,880 --> 00:04:32,480 Speaker 1: father and the governorship, but the records are not entirely 73 00:04:32,480 --> 00:04:35,200 Speaker 1: clear on that point. So we knew a fair amount 74 00:04:35,200 --> 00:04:38,839 Speaker 1: about Avison's life because he dictated an autobiography to a 75 00:04:38,920 --> 00:04:43,960 Speaker 1: protege named Algis Johnny, and this protegee also added additional 76 00:04:44,040 --> 00:04:49,280 Speaker 1: biographical information. Some of Avison's own correspondents also survives, but 77 00:04:49,320 --> 00:04:52,800 Speaker 1: we don't really have a whole lot of contemporaneous accounts 78 00:04:52,800 --> 00:04:57,560 Speaker 1: to balance out this perspective. UM, and the existence of 79 00:04:57,600 --> 00:05:01,000 Speaker 1: the autobiography also seems to have had this unintended side 80 00:05:01,000 --> 00:05:04,800 Speaker 1: effect of prompting less scholarship about his life. It was 81 00:05:04,839 --> 00:05:07,840 Speaker 1: basically like, there's already all this information here, so we 82 00:05:07,839 --> 00:05:10,040 Speaker 1: don't need to go on a quest to find more 83 00:05:10,080 --> 00:05:13,400 Speaker 1: of it. And especially when it comes to his youth, 84 00:05:13,800 --> 00:05:17,280 Speaker 1: the autobiography is all we have uh, and its discussion 85 00:05:17,279 --> 00:05:19,400 Speaker 1: of his childhood is really more like the study of 86 00:05:19,400 --> 00:05:21,760 Speaker 1: a scholar set out in such a way as to 87 00:05:21,800 --> 00:05:24,359 Speaker 1: act as evidence of avice and his own thoughts on 88 00:05:24,480 --> 00:05:28,239 Speaker 1: knowledge and wisdom. It basically recounts his learning. It moves 89 00:05:28,240 --> 00:05:32,359 Speaker 1: through increasingly difficult material and sequence uh and often his 90 00:05:32,440 --> 00:05:37,400 Speaker 1: own without instruction, so he basically kind of does maps 91 00:05:37,440 --> 00:05:39,960 Speaker 1: out the natural progression of I learned a little bit, 92 00:05:40,000 --> 00:05:42,200 Speaker 1: I learned some harder things. Eventually I had to seek 93 00:05:42,200 --> 00:05:44,960 Speaker 1: out my own knowledge because no one could teach me right. So, 94 00:05:45,080 --> 00:05:47,640 Speaker 1: rather than sort of being a story about how he 95 00:05:47,680 --> 00:05:50,600 Speaker 1: grew up, this autobiography, when it comes to his youth 96 00:05:50,760 --> 00:05:53,440 Speaker 1: is more like an illustration of how a person can 97 00:05:53,480 --> 00:05:58,520 Speaker 1: acquire wisdom and knowledge through intuition, So it's almost more 98 00:05:58,600 --> 00:06:02,240 Speaker 1: like a curriculum for learning things and an example of 99 00:06:02,279 --> 00:06:05,320 Speaker 1: having done it, rather than an autobiography as we would 100 00:06:05,320 --> 00:06:08,320 Speaker 1: think of it today. And in his adulthood, he was 101 00:06:08,360 --> 00:06:10,800 Speaker 1: known to be a gregarious person who loved life and 102 00:06:10,880 --> 00:06:15,560 Speaker 1: its pleasures, including drinking and sex. He was witty and charismatic, 103 00:06:15,600 --> 00:06:18,039 Speaker 1: and he was often in the company of friends, and 104 00:06:18,080 --> 00:06:21,560 Speaker 1: at the same time, as is often the case with geniuses, 105 00:06:21,640 --> 00:06:25,600 Speaker 1: he could also have periods of brooding and loneliness. So 106 00:06:26,880 --> 00:06:31,600 Speaker 1: go figure, no surprise, really not really, As in many religions, 107 00:06:31,640 --> 00:06:35,200 Speaker 1: excessive sex and alcohol consumption were quite frowned upon among 108 00:06:35,240 --> 00:06:39,000 Speaker 1: strict Muslims where he lived, So there these same traits 109 00:06:39,080 --> 00:06:41,760 Speaker 1: that kind of defined him also put him at odds 110 00:06:41,760 --> 00:06:45,200 Speaker 1: with Islamic conventions and social norms, and they earned him 111 00:06:45,240 --> 00:06:48,320 Speaker 1: a lot of enemies as well. He had to move 112 00:06:48,400 --> 00:06:51,080 Speaker 1: from place to place and from patron to patron as 113 00:06:51,120 --> 00:06:54,200 Speaker 1: he rubbed people the wrong way with his flaunting of 114 00:06:54,240 --> 00:06:58,400 Speaker 1: religious and social expectations and of you know, being kind 115 00:06:58,440 --> 00:07:01,200 Speaker 1: of pretentious and hard to get along way and As 116 00:07:01,240 --> 00:07:04,560 Speaker 1: we said earlier, he was also a little conceited and arrogant. 117 00:07:05,080 --> 00:07:06,840 Speaker 1: He was brilliant and he knew it, and he was 118 00:07:06,880 --> 00:07:09,200 Speaker 1: not afraid to tell people how much he knew or 119 00:07:09,200 --> 00:07:12,560 Speaker 1: how very good he was at any particular thing. And 120 00:07:12,600 --> 00:07:14,640 Speaker 1: this is the one that always makes me go, oh 121 00:07:14,640 --> 00:07:18,440 Speaker 1: no Avicenna. Uh. He was also not shy about embarrassing 122 00:07:18,440 --> 00:07:21,640 Speaker 1: and shaming his rivals if they rubbed him the wrong way. Yeah. 123 00:07:21,720 --> 00:07:24,800 Speaker 1: So he was pretty outspoken about his greatness and everyone 124 00:07:24,840 --> 00:07:27,880 Speaker 1: else's not greatness. Right. He would do things like show 125 00:07:28,160 --> 00:07:33,680 Speaker 1: someone a forgery, knowing that it was a forgery, to 126 00:07:33,840 --> 00:07:36,240 Speaker 1: see if that person would spot that it was a 127 00:07:36,280 --> 00:07:39,680 Speaker 1: fart a forgery in front of others, and when the 128 00:07:39,720 --> 00:07:42,160 Speaker 1: person did not spot that it was a forgery, make 129 00:07:42,200 --> 00:07:46,960 Speaker 1: fun of them. It's kind of a brilliant jerk. Yeah. But, 130 00:07:47,080 --> 00:07:51,200 Speaker 1: as we are about to talk about, extensively, hugely influential 131 00:07:51,240 --> 00:07:55,320 Speaker 1: and important, especially in the worlds of philosophy and medicine. 132 00:07:55,720 --> 00:07:58,880 Speaker 1: By about the age of twenty one, Avicenna had started 133 00:07:58,920 --> 00:08:01,360 Speaker 1: to write, and before his death he had written more 134 00:08:01,400 --> 00:08:05,520 Speaker 1: than two hundred and forty books, treatises, and other works, 135 00:08:05,600 --> 00:08:10,600 Speaker 1: and these spanned all kinds of subjects including math, science, philosophy, music, 136 00:08:10,680 --> 00:08:13,880 Speaker 1: and poetry. And as we just said today, he is 137 00:08:14,000 --> 00:08:16,800 Speaker 1: most known and was most influential for his work in 138 00:08:16,880 --> 00:08:19,520 Speaker 1: medicine and philosophy. So we're going to talk about his 139 00:08:19,640 --> 00:08:24,400 Speaker 1: philosophy first and his medicine second. His most important philosophical 140 00:08:24,400 --> 00:08:27,560 Speaker 1: work is the Katab al Shifa, also called The Cure, 141 00:08:27,920 --> 00:08:32,559 Speaker 1: which was an encyclopedia of logic, physics, math, and metaphysics. 142 00:08:32,600 --> 00:08:35,040 Speaker 1: And this work was modeled after the work of Aristotle 143 00:08:35,120 --> 00:08:38,360 Speaker 1: with a grounding in Islam, and it was translated into 144 00:08:38,440 --> 00:08:41,959 Speaker 1: Latin in Spain during the twelfth and thirteen centuries, after 145 00:08:41,960 --> 00:08:46,120 Speaker 1: which it became hugely influential in Europe. The physics volume 146 00:08:46,320 --> 00:08:49,160 Speaker 1: wasn't just what we think of as physics today. It 147 00:08:49,200 --> 00:08:55,080 Speaker 1: also included what we classify more as biology, meteorology, mineralogy, 148 00:08:55,120 --> 00:09:00,320 Speaker 1: and even psychology. The math volume also includes geography, a star, eontomy, 149 00:09:00,320 --> 00:09:04,280 Speaker 1: and music in addition to the arithmetic and geometry that 150 00:09:04,320 --> 00:09:06,600 Speaker 1: would immediately come to mind when we think about math, 151 00:09:07,280 --> 00:09:11,160 Speaker 1: and he also wrote about dream interpretations, talisman and alchemy 152 00:09:11,200 --> 00:09:14,120 Speaker 1: as well, although in the end he rejected the idea 153 00:09:14,160 --> 00:09:17,840 Speaker 1: that base metals could be transmuted into other things As 154 00:09:17,840 --> 00:09:21,080 Speaker 1: a philosopher. One of his most notable thought experiments was 155 00:09:21,120 --> 00:09:24,120 Speaker 1: called the flying Man, also known as the floating Man, 156 00:09:24,480 --> 00:09:28,640 Speaker 1: which reflected on what a completely blank slate of a 157 00:09:28,679 --> 00:09:32,600 Speaker 1: person could be aware of. So, in this thought experiment, 158 00:09:32,679 --> 00:09:36,800 Speaker 1: imagine that God has just created a fully formed adult 159 00:09:36,840 --> 00:09:40,079 Speaker 1: person and kind of a sensory vacuum. This person has 160 00:09:40,120 --> 00:09:43,760 Speaker 1: no memory, he has no sensory input at all. None 161 00:09:43,760 --> 00:09:45,920 Speaker 1: of his body parts are even touching each other, so 162 00:09:46,000 --> 00:09:48,680 Speaker 1: he's not even aware of his own body. So, in 163 00:09:48,760 --> 00:09:52,440 Speaker 1: this thought experiment, what would this newly minted person be 164 00:09:52,520 --> 00:09:56,920 Speaker 1: aware of. According to Avicenna's philosophy, he would be aware 165 00:09:57,120 --> 00:10:00,760 Speaker 1: that he existed. So to Avicenna the Smith, that self 166 00:10:00,800 --> 00:10:04,160 Speaker 1: awareness is a fundamental part of life, and that also 167 00:10:04,240 --> 00:10:06,920 Speaker 1: suggested to him that the soul is different from the 168 00:10:06,920 --> 00:10:09,760 Speaker 1: body because you could be aware of yourself without being 169 00:10:09,800 --> 00:10:13,280 Speaker 1: aware of your body. And this was significant because it 170 00:10:13,400 --> 00:10:15,640 Speaker 1: was different from much of the theology at the time, 171 00:10:16,040 --> 00:10:19,120 Speaker 1: which largely taught that the soul was a material substance 172 00:10:19,880 --> 00:10:23,079 Speaker 1: that had an atomic makeup like it was an actual 173 00:10:23,240 --> 00:10:26,920 Speaker 1: physical thing. This whole idea also draws a parallel between 174 00:10:27,000 --> 00:10:30,960 Speaker 1: humans and God, because Avicenna saw God as a self 175 00:10:31,080 --> 00:10:35,720 Speaker 1: thinking intellect. So in Avicenna's view, both humans and God 176 00:10:35,880 --> 00:10:38,640 Speaker 1: have this ability for self awareness, and that makes self 177 00:10:38,679 --> 00:10:43,920 Speaker 1: awareness something extremely special. According to ancient and medieval philosophy 178 00:10:43,920 --> 00:10:47,520 Speaker 1: professor Peter Adamson, this is one of the first times 179 00:10:47,559 --> 00:10:51,040 Speaker 1: that philosophy put forth this idea and this connection between 180 00:10:51,080 --> 00:10:54,320 Speaker 1: man and God. And Avicenna also created a proof that 181 00:10:54,440 --> 00:10:57,560 Speaker 1: he believed proved the existence of God, which takes a 182 00:10:57,559 --> 00:11:00,920 Speaker 1: great deal of explaining, so we will link to a 183 00:11:00,960 --> 00:11:04,079 Speaker 1: full explanation of it in the show notes rather than 184 00:11:04,200 --> 00:11:06,920 Speaker 1: kind of taking you through the proof here. Yes, I 185 00:11:06,960 --> 00:11:09,080 Speaker 1: listened to you a thirty minute podcast that was just 186 00:11:09,160 --> 00:11:12,600 Speaker 1: an explanation of this proof, So rather than spending thirty 187 00:11:12,640 --> 00:11:16,920 Speaker 1: minutes on that, we will of all of the various logic. Yeah, 188 00:11:16,960 --> 00:11:19,040 Speaker 1: there's a lot of logic and a lot of sort 189 00:11:19,040 --> 00:11:22,199 Speaker 1: of philosophical groundwork that has to be put down first. 190 00:11:22,280 --> 00:11:25,040 Speaker 1: That if you're not already familiar with the takes explaining itself. 191 00:11:25,240 --> 00:11:29,960 Speaker 1: So um, before we move on to his discussion of medicine, 192 00:11:30,200 --> 00:11:32,320 Speaker 1: let's take a moment and talk about our sponsor. That 193 00:11:32,360 --> 00:11:36,960 Speaker 1: sounds okay, and now we'll get back to some extremely 194 00:11:37,000 --> 00:11:41,040 Speaker 1: important scientific work from very long ago, so Avicenna's most 195 00:11:41,080 --> 00:11:44,680 Speaker 1: influential medical work was the five book work The Canon 196 00:11:44,720 --> 00:11:49,160 Speaker 1: of Medicine Alcanum fiel tib which was influential both in 197 00:11:49,280 --> 00:11:52,120 Speaker 1: his region of the world and in European medical schools. 198 00:11:52,840 --> 00:11:54,760 Speaker 1: And some of this medical writing was based on the 199 00:11:54,760 --> 00:11:58,079 Speaker 1: Greek physician Galen's idea that of the four humors, which 200 00:11:58,120 --> 00:12:01,960 Speaker 1: are blood, flegm, black by and yellow bile, along with 201 00:12:02,000 --> 00:12:04,959 Speaker 1: the Greek idea of four elements of earth, air, fire, 202 00:12:05,000 --> 00:12:08,280 Speaker 1: and water, and the Cannon of Medicine also draws heavily 203 00:12:08,320 --> 00:12:12,920 Speaker 1: on the work of Hippocrates. There's also work on anatomy, 204 00:12:13,160 --> 00:12:18,000 Speaker 1: the causes and treatments of diseases, hygiene, medicines, pathology, basically 205 00:12:18,160 --> 00:12:21,720 Speaker 1: the whole world of known medicine at the time in 206 00:12:21,880 --> 00:12:25,240 Speaker 1: one five volume work. And the fifth book of the 207 00:12:25,280 --> 00:12:28,559 Speaker 1: Cannon of Medicine is actually a drug formulary, which was 208 00:12:28,600 --> 00:12:31,160 Speaker 1: a completely new idea in the field of medicine at 209 00:12:31,160 --> 00:12:34,440 Speaker 1: the time, sort of the first pharmacist manual. Yeah, so 210 00:12:34,480 --> 00:12:37,480 Speaker 1: the Canon of Medicine was basically one work that distilled 211 00:12:37,480 --> 00:12:40,640 Speaker 1: the whole of medical knowledge into five volumes. So it's 212 00:12:40,679 --> 00:12:43,200 Speaker 1: really not at all surprising that it became the mainstay 213 00:12:43,400 --> 00:12:47,319 Speaker 1: of medical education and that lasted for hundreds of years. 214 00:12:47,880 --> 00:12:50,600 Speaker 1: When schools in Europe finally drifted away from it, it 215 00:12:50,640 --> 00:12:53,800 Speaker 1: was also moving away from the whole idea that humors 216 00:12:53,960 --> 00:12:57,760 Speaker 1: caused disease when they are out of balance. So basically, 217 00:12:57,840 --> 00:13:02,080 Speaker 1: avison Is work was the core of medical education until 218 00:13:02,440 --> 00:13:05,040 Speaker 1: medicine moved away from the entire idea that a lot 219 00:13:05,040 --> 00:13:07,960 Speaker 1: of it was based on. And although this whole idea 220 00:13:08,040 --> 00:13:12,720 Speaker 1: of humors isn't part of mainstream medicine today. Uh. Overall, 221 00:13:12,840 --> 00:13:17,120 Speaker 1: Avicenna's medical writing was well tested and it was evidence based. 222 00:13:17,280 --> 00:13:20,440 Speaker 1: There's some really solid medical thought in there that still 223 00:13:20,480 --> 00:13:24,040 Speaker 1: holds true today. He also kept clinical records which were 224 00:13:24,040 --> 00:13:26,560 Speaker 1: intended to be used as an appendix to the canon 225 00:13:26,600 --> 00:13:29,920 Speaker 1: of medicine. UH. Those haven't survived until today, but we 226 00:13:30,000 --> 00:13:34,040 Speaker 1: do know some specifics about his medical practices. One was 227 00:13:34,080 --> 00:13:37,240 Speaker 1: that he recommended wine as a wound dressing, which was 228 00:13:37,280 --> 00:13:41,000 Speaker 1: a common treatment in medieval Europe and actually since then. 229 00:13:41,040 --> 00:13:45,280 Speaker 1: It contains alcohol can be effective at helping to prevent infection. 230 00:13:45,920 --> 00:13:49,720 Speaker 1: He also used reduction techniques like pressure and traction to 231 00:13:49,800 --> 00:13:53,720 Speaker 1: treat spinal deformities, which is something that Hippocrates had written of, 232 00:13:53,840 --> 00:13:57,559 Speaker 1: and this whole practice disappeared from medicine after Avicenna's time 233 00:13:57,640 --> 00:14:01,400 Speaker 1: until a French surgeon picked it up and then nineteenth century. 234 00:14:02,360 --> 00:14:07,839 Speaker 1: He also correctly used sweet tasting urine to diagnose diabetes. 235 00:14:08,760 --> 00:14:11,640 Speaker 1: So did he taste it? Probably that is the thing 236 00:14:11,679 --> 00:14:15,760 Speaker 1: that people would do, uh, and that is definitely identify 237 00:14:15,840 --> 00:14:18,480 Speaker 1: sugar in it, definitely an indication that a person could 238 00:14:18,480 --> 00:14:21,680 Speaker 1: have diabetes. We know that he performed surgery, and there 239 00:14:21,680 --> 00:14:25,120 Speaker 1: are surgical instruments that belonged to him in museums and 240 00:14:25,280 --> 00:14:27,200 Speaker 1: within the world of surgery. One of the things that 241 00:14:27,240 --> 00:14:30,120 Speaker 1: he did was to describe how to find the healthy 242 00:14:30,280 --> 00:14:34,400 Speaker 1: margins of a surgical site when performing an amputation. He 243 00:14:34,480 --> 00:14:37,240 Speaker 1: also wrote about how to cut an umbilical cord and 244 00:14:37,280 --> 00:14:40,800 Speaker 1: how to clean, swaddle, and feed a newborn baby, so 245 00:14:40,920 --> 00:14:43,920 Speaker 1: this is basically all over all kinds of areas of medicine. 246 00:14:43,960 --> 00:14:46,640 Speaker 1: At this point. A lot of his writing was also 247 00:14:46,720 --> 00:14:50,320 Speaker 1: about generally being healthy, how to get well and stay well, 248 00:14:50,360 --> 00:14:54,040 Speaker 1: and it included the effects of recreation, the home, family life, 249 00:14:54,040 --> 00:14:56,920 Speaker 1: and all sorts of other factors on human health. So 250 00:14:57,040 --> 00:15:00,480 Speaker 1: consequently he's been referred to as the four Runner of 251 00:15:00,520 --> 00:15:05,520 Speaker 1: preventive medicine, which is something we take for granted today. Yeah, 252 00:15:05,600 --> 00:15:08,080 Speaker 1: he really, uh you know, was the first to put 253 00:15:08,120 --> 00:15:10,880 Speaker 1: forth the idea of sort of a holistic health view 254 00:15:12,000 --> 00:15:17,080 Speaker 1: versus just treating incidents of health issues. So Avirisona was 255 00:15:17,120 --> 00:15:21,000 Speaker 1: extremely influential and extremely important, and unfortunately his life was 256 00:15:21,040 --> 00:15:24,720 Speaker 1: not particularly long. At the age of fifty seven, he 257 00:15:24,800 --> 00:15:27,800 Speaker 1: was traveling with his patron and he developed colicue, which 258 00:15:27,840 --> 00:15:31,000 Speaker 1: he decided to treat himself, and ultimately this wound up 259 00:15:31,080 --> 00:15:33,960 Speaker 1: leading to his death. The course of treatment that he 260 00:15:34,000 --> 00:15:39,120 Speaker 1: wanted to undergo involved getting eight celery seed enemies a day, 261 00:15:39,560 --> 00:15:43,240 Speaker 1: and it's unclear whether this was intentional on the part 262 00:15:43,280 --> 00:15:45,880 Speaker 1: of one of his attendants, but the formula that he 263 00:15:45,960 --> 00:15:49,960 Speaker 1: gave to himself was prepared to contain more than double 264 00:15:50,040 --> 00:15:52,520 Speaker 1: the amount of active ingredient that it was supposed to. 265 00:15:53,320 --> 00:15:57,800 Speaker 1: His intestines became ulcerated as a result, and to treat 266 00:15:57,840 --> 00:16:01,240 Speaker 1: the ulceration, he used a mild form of opium, and 267 00:16:01,280 --> 00:16:04,200 Speaker 1: at this time we know that there was a tampering 268 00:16:04,240 --> 00:16:08,000 Speaker 1: that was intentional. A slave laced this opium with an 269 00:16:08,040 --> 00:16:11,560 Speaker 1: extra dose. His health started to go downhill, and he 270 00:16:11,880 --> 00:16:14,880 Speaker 1: refused to leave his patron. He kept traveling with him, 271 00:16:14,960 --> 00:16:17,600 Speaker 1: but his condition got worse and worse, and he finally 272 00:16:17,680 --> 00:16:21,680 Speaker 1: died in ten thirty seven, and Amasona is buried in 273 00:16:21,720 --> 00:16:25,120 Speaker 1: Hamdan and his tomb, which had fallen into disrepair, was 274 00:16:25,160 --> 00:16:28,360 Speaker 1: refurbished in the nineteen fifties and now it's home to 275 00:16:28,440 --> 00:16:31,840 Speaker 1: a mausoleum in an eight thousand volume library. Yeah, there's 276 00:16:31,880 --> 00:16:37,440 Speaker 1: a big sort of pillared monument there. It's very striking 277 00:16:37,480 --> 00:16:40,920 Speaker 1: to look at. As we said earlier, although his his 278 00:16:41,080 --> 00:16:45,200 Speaker 1: medical writing is not really part of modern medical thought, 279 00:16:45,280 --> 00:16:49,320 Speaker 1: his philosophy is still widely studied among Muslims today. He's 280 00:16:49,320 --> 00:16:51,800 Speaker 1: one of those people that's so influential. It's almost surprising 281 00:16:51,840 --> 00:16:53,800 Speaker 1: that you don't hear of him. I had never heard 282 00:16:53,840 --> 00:16:55,640 Speaker 1: of him before I started. Well, I had heard of 283 00:16:55,720 --> 00:16:58,440 Speaker 1: him because I've read the Canterbury Tales in Dante's Inferno, 284 00:16:59,120 --> 00:17:01,320 Speaker 1: but his name had not stuck into my head, and 285 00:17:01,400 --> 00:17:04,960 Speaker 1: still until I started doing research on this podcast. It's 286 00:17:04,960 --> 00:17:07,119 Speaker 1: pretty rare that somebody living at that time would have 287 00:17:07,160 --> 00:17:11,840 Speaker 1: been that influential among both Christians and Muslims. Yeah, it's 288 00:17:11,880 --> 00:17:14,840 Speaker 1: a it's a really interesting story. I actually do kind 289 00:17:14,880 --> 00:17:16,879 Speaker 1: of want to go read his proof, which I have 290 00:17:16,960 --> 00:17:20,639 Speaker 1: not yet. I have only listened to the analysis and 291 00:17:20,680 --> 00:17:24,920 Speaker 1: description of it that that took like thirty minutes to explain. Um, 292 00:17:24,920 --> 00:17:28,399 Speaker 1: perfect lunchtime listening it is. It is pretty pretty perfect 293 00:17:28,480 --> 00:17:32,959 Speaker 1: lunchtime listening. There are some awesome philosophy podcasts, some of 294 00:17:32,960 --> 00:17:36,480 Speaker 1: which I used as sources for this. We will link 295 00:17:36,520 --> 00:17:38,399 Speaker 1: them all up in show notes because I don't have 296 00:17:38,440 --> 00:17:41,760 Speaker 1: them noted right in front of me. But yeah, Avicenna, 297 00:17:42,000 --> 00:17:45,840 Speaker 1: possibly unknown person credited with the health and were welfare 298 00:17:45,880 --> 00:17:48,760 Speaker 1: of much of medieval Europe. All right, do you have 299 00:17:48,760 --> 00:17:51,280 Speaker 1: some listener mail to share with us? I do. I 300 00:17:51,320 --> 00:17:53,639 Speaker 1: have two pieces of listener mail, and they're both about 301 00:17:53,640 --> 00:17:57,720 Speaker 1: the Boston massacre. The first is from Paul, and Paul 302 00:17:57,800 --> 00:17:59,840 Speaker 1: writes to us. It's a rather long letter, so I'm 303 00:17:59,840 --> 00:18:01,600 Speaker 1: not going to eat all of it. But he writes 304 00:18:01,600 --> 00:18:04,719 Speaker 1: about where he listens. He apparently cannot listen to us 305 00:18:04,720 --> 00:18:07,120 Speaker 1: while driving because it requires too much of his attention, 306 00:18:07,640 --> 00:18:11,320 Speaker 1: but he has been listening while he runs, which is 307 00:18:11,320 --> 00:18:14,680 Speaker 1: pretty cool. Uh. Then he says, as a history major 308 00:18:14,720 --> 00:18:17,760 Speaker 1: and a trivia aficionado, I particularly look forward to subject 309 00:18:17,840 --> 00:18:20,680 Speaker 1: matter that I think I know well. I'm always pleasantly 310 00:18:20,760 --> 00:18:23,440 Speaker 1: surprised by the new facts or perspectives that you bring 311 00:18:23,480 --> 00:18:25,560 Speaker 1: to the shows. Of course, I love hearing about all 312 00:18:25,640 --> 00:18:28,280 Speaker 1: matter of subjects that I knew nothing of. I have 313 00:18:28,400 --> 00:18:31,000 Speaker 1: learned more about communicable diseases than I maybe would have 314 00:18:31,080 --> 00:18:34,240 Speaker 1: cared to learn on my own. For instance, I did 315 00:18:34,320 --> 00:18:37,920 Speaker 1: want to put yeah, I knew you and us both 316 00:18:38,000 --> 00:18:41,240 Speaker 1: we did have a whole run of tuberculosis and small box. 317 00:18:42,240 --> 00:18:43,800 Speaker 1: I did want to put in my two cents about 318 00:18:43,840 --> 00:18:46,720 Speaker 1: your boss the mask per episode. As a proud Bostonian, 319 00:18:46,760 --> 00:18:49,199 Speaker 1: I felt it my duty. I was really excited for 320 00:18:49,200 --> 00:18:51,920 Speaker 1: this episode as a Colonial America buff and a local 321 00:18:51,960 --> 00:18:54,080 Speaker 1: of the Boston area. I did want to add another 322 00:18:54,160 --> 00:18:56,720 Speaker 1: cause for tensions that led to the riot, namely the 323 00:18:56,800 --> 00:19:00,359 Speaker 1: Quartering Acts, where Boston colonists were forced to house the 324 00:19:00,359 --> 00:19:03,199 Speaker 1: British regulars who were sent there to essentially suppress the 325 00:19:03,240 --> 00:19:06,760 Speaker 1: Bostonians and their dissatisfaction with the towns and acts. The 326 00:19:06,880 --> 00:19:10,080 Speaker 1: soldiers were sent in part as a reaction to the 327 00:19:10,200 --> 00:19:13,840 Speaker 1: non importation Acts revived in Boston, where the city refused 328 00:19:13,840 --> 00:19:16,240 Speaker 1: to buy any imported goods as a measure that was 329 00:19:16,280 --> 00:19:20,640 Speaker 1: adopted across the Northern colonies. Eventually This hit the English 330 00:19:20,640 --> 00:19:23,520 Speaker 1: merchants in their wallets, and that had been an effective 331 00:19:23,520 --> 00:19:28,080 Speaker 1: method in repealing the stamp acts. Boston's resistance became a 332 00:19:28,119 --> 00:19:31,560 Speaker 1: spark that eventually ignited the rebellion. The true presence was 333 00:19:31,600 --> 00:19:34,159 Speaker 1: a catalyst that made loyal subjects of the crown rethink 334 00:19:34,200 --> 00:19:37,400 Speaker 1: their positions. Imagine four thousand soldiers of occupying a city 335 00:19:37,440 --> 00:19:40,920 Speaker 1: of twenty thousand. I know the word massacre is an exaggeration, 336 00:19:40,960 --> 00:19:43,439 Speaker 1: but I always wondered why a mob of hundreds didn't 337 00:19:43,440 --> 00:19:46,520 Speaker 1: retaliate more violently against eight soldiers after they had shot 338 00:19:46,560 --> 00:19:51,000 Speaker 1: into a crowd. Certainly, armed people killing unarmed people is 339 00:19:51,040 --> 00:19:54,120 Speaker 1: an act that barrison scrutiny. I always found Adam's description 340 00:19:54,160 --> 00:19:56,920 Speaker 1: of the crowd, which is laden with racial overtones, quite 341 00:19:56,960 --> 00:19:59,879 Speaker 1: illustrative of how at least some of the four of 342 00:20:00,000 --> 00:20:03,439 Speaker 1: others truly did not believe that all men were created equal. Anyway, 343 00:20:03,560 --> 00:20:06,680 Speaker 1: enough rambling, keep up the great works, sincerely, Paul, Thank you, Paul. 344 00:20:07,880 --> 00:20:11,840 Speaker 1: Uh we did not quite say explicitly that, yes, Adam's 345 00:20:11,920 --> 00:20:15,480 Speaker 1: description of the people who writed is quite laced with 346 00:20:15,600 --> 00:20:21,800 Speaker 1: judgment and uh bigotry. I think it's the word um 347 00:20:21,840 --> 00:20:25,400 Speaker 1: so that is that is letter one about the black 348 00:20:25,440 --> 00:20:28,719 Speaker 1: and masker. I have letter to about the Boston massaker, 349 00:20:28,800 --> 00:20:30,679 Speaker 1: and then we will kind of talk about both of them. Uh. 350 00:20:30,800 --> 00:20:32,600 Speaker 1: The second one is from our Facebook while and it's 351 00:20:32,600 --> 00:20:35,199 Speaker 1: from Shawn Sean says Dear Tracy and Holly. I'm a 352 00:20:35,200 --> 00:20:37,399 Speaker 1: big fan of the podcast and recently listened to the 353 00:20:37,400 --> 00:20:40,520 Speaker 1: episode on the Boston massacre. During the podcast, you mentioned 354 00:20:40,520 --> 00:20:43,080 Speaker 1: repeatedly how the term massacre seems an odd choice to 355 00:20:43,160 --> 00:20:45,840 Speaker 1: modern ears to describe the event, given the seemingly small 356 00:20:45,880 --> 00:20:48,639 Speaker 1: amount of lives cost and the incident compared to what 357 00:20:48,680 --> 00:20:51,439 Speaker 1: we are sadly used to today. Well, I agree with 358 00:20:51,440 --> 00:20:53,560 Speaker 1: you guys that the use of the term was undoubtedly 359 00:20:53,640 --> 00:20:57,320 Speaker 1: driven by political and propaganda aims. I was also curious 360 00:20:57,320 --> 00:20:59,560 Speaker 1: that somehow the concept of what would pass as a 361 00:20:59,600 --> 00:21:02,280 Speaker 1: massacre in the eighteenth century was influenced by the weapons 362 00:21:02,280 --> 00:21:05,360 Speaker 1: available at the time and the carnage they could dispense. 363 00:21:05,760 --> 00:21:07,879 Speaker 1: Let's keep in mind that the British soldiers involved in 364 00:21:07,920 --> 00:21:10,360 Speaker 1: the event were all armed with large caliber, single shop 365 00:21:10,440 --> 00:21:14,120 Speaker 1: muzzle loading muskets. These were inaccurate at best, and even 366 00:21:14,119 --> 00:21:16,720 Speaker 1: the best trained soldiers, such as the Heshan's the tie 367 00:21:16,720 --> 00:21:19,639 Speaker 1: in another podcast topic, could only be expected to manage 368 00:21:19,640 --> 00:21:22,520 Speaker 1: three shots per minute and the best of conditions. So 369 00:21:22,600 --> 00:21:25,639 Speaker 1: far I can tell none of the soldiers involved fired 370 00:21:25,680 --> 00:21:29,240 Speaker 1: more than once, and some victims were hit multiple times. 371 00:21:29,240 --> 00:21:32,240 Speaker 1: Perhaps it is therefore unlikely to have expected a greater 372 00:21:32,359 --> 00:21:36,280 Speaker 1: number of casualties than what actually occurred, Although estimates ary 373 00:21:36,600 --> 00:21:39,480 Speaker 1: the number of combat dead in the U s Revolution 374 00:21:39,560 --> 00:21:41,879 Speaker 1: may have been less than eight thousand people. I do 375 00:21:41,960 --> 00:21:44,080 Speaker 1: not mean in any way to diminish the loss of life, 376 00:21:44,160 --> 00:21:47,240 Speaker 1: but merely venture the opinion that just as the use 377 00:21:47,320 --> 00:21:50,000 Speaker 1: of the term massacre seems uncalled for to us today 378 00:21:50,040 --> 00:21:53,400 Speaker 1: because of our cultural conditioning, perhaps our forefathers looked upon 379 00:21:53,440 --> 00:21:56,800 Speaker 1: it exactly that because of theirs. At any rate, keep 380 00:21:56,880 --> 00:22:00,159 Speaker 1: up the awesome work. Uh. And then he suggests a 381 00:22:00,320 --> 00:22:04,280 Speaker 1: podcast episode topic for the future. So thank you also, 382 00:22:04,480 --> 00:22:08,240 Speaker 1: Sean Um. We we got a fair amount of flak 383 00:22:08,359 --> 00:22:11,879 Speaker 1: from people about how we talked about the Boston mastheaw um. 384 00:22:11,920 --> 00:22:15,040 Speaker 1: And after getting this particularly reason the question from Sean, 385 00:22:15,160 --> 00:22:20,280 Speaker 1: I went and did some looking because I wondered I 386 00:22:20,320 --> 00:22:23,720 Speaker 1: was pretty contextually qualified as a massacre. I was pretty 387 00:22:23,760 --> 00:22:25,480 Speaker 1: I was pretty up front at the beginning that I 388 00:22:25,520 --> 00:22:29,200 Speaker 1: think of massacres today is something like horrifying and terrible, 389 00:22:29,480 --> 00:22:33,840 Speaker 1: and it turns out it's always meant something horrifying and terrible. 390 00:22:34,160 --> 00:22:37,879 Speaker 1: So the word massacre comes from French words that relate 391 00:22:37,960 --> 00:22:40,840 Speaker 1: to butcher's knives and blocks, so that's what it meant 392 00:22:40,840 --> 00:22:45,040 Speaker 1: originally before it became something that meant slaughter. Its first 393 00:22:45,200 --> 00:22:48,240 Speaker 1: uses in English came from the sixteenth century and referred 394 00:22:48,280 --> 00:22:52,200 Speaker 1: to the bloody massacre at Paris, and that's the math, 395 00:22:52,320 --> 00:22:56,080 Speaker 1: the massacre of St. Bartholon New's Day. So to catch 396 00:22:56,119 --> 00:22:57,960 Speaker 1: everyone up if you have not heard of this before. 397 00:22:58,640 --> 00:23:03,480 Speaker 1: In this massacre, Catherine Demonici, who was Catholic, orchestrated the 398 00:23:03,560 --> 00:23:07,200 Speaker 1: murder of the Hugueno nobility who were Protestant. And these 399 00:23:07,240 --> 00:23:12,000 Speaker 1: were people who were in Paris for a wedding. It's 400 00:23:12,000 --> 00:23:14,960 Speaker 1: not in any way aggressive. Well, I mean there was 401 00:23:15,040 --> 00:23:18,040 Speaker 1: tension there, but their their visit to Paris was not 402 00:23:18,200 --> 00:23:24,359 Speaker 1: about a wedding specifically, the wedding was of Catherine de 403 00:23:24,440 --> 00:23:29,159 Speaker 1: Medici's daughter Margaret, to Henry of Navarre, who was a 404 00:23:29,240 --> 00:23:33,679 Speaker 1: Hugueno and would later become Henry the Fourth. So the 405 00:23:33,800 --> 00:23:38,080 Speaker 1: final death toll of this massacre was in the thousands, 406 00:23:38,119 --> 00:23:40,320 Speaker 1: and a lot of the people who were killed, were 407 00:23:40,520 --> 00:23:43,120 Speaker 1: seriously were in their homes or working in their shops 408 00:23:43,160 --> 00:23:46,160 Speaker 1: at the time. Some of them were even attendants who 409 00:23:46,160 --> 00:23:51,640 Speaker 1: were attending Hugueno aristocrats who were in the louver for 410 00:23:51,680 --> 00:23:57,680 Speaker 1: the wedding festivities at a time. So, like, I see 411 00:23:57,720 --> 00:23:59,399 Speaker 1: what people like. There are people who felt like we 412 00:23:59,480 --> 00:24:07,280 Speaker 1: really treated the massacre and quotation marks too lightly. Massacre 413 00:24:07,400 --> 00:24:12,720 Speaker 1: has really always meant something horrifying, involving either massive carnage 414 00:24:12,880 --> 00:24:15,400 Speaker 1: or the slaughter of innocent people who were doing nothing. 415 00:24:15,440 --> 00:24:18,639 Speaker 1: And that's really not what was happening in Boston on 416 00:24:18,720 --> 00:24:20,880 Speaker 1: that day. In Boston on that day, we had a 417 00:24:20,920 --> 00:24:25,600 Speaker 1: big group of civilians who surrounded a small group of 418 00:24:25,760 --> 00:24:29,359 Speaker 1: armed soldiers and we're like throwing rocks and oyster shells 419 00:24:29,359 --> 00:24:32,040 Speaker 1: and things at them and insulting. So I'm not saying 420 00:24:32,080 --> 00:24:35,840 Speaker 1: anybody should have gotten shot. It's still a huge tragedy. Yeah, 421 00:24:35,920 --> 00:24:38,600 Speaker 1: it's definitely a tragedy. It is also definitely not a 422 00:24:38,680 --> 00:24:45,119 Speaker 1: massacre by the definition of massacre um not even the 423 00:24:45,160 --> 00:24:49,520 Speaker 1: connotations of massacre, like the actual dictionary definition of massacre. 424 00:24:49,640 --> 00:24:53,360 Speaker 1: So while it's definitely not our intent to make light 425 00:24:53,560 --> 00:24:56,960 Speaker 1: of anyone death, there was a whole lot of stuff 426 00:24:57,040 --> 00:25:00,439 Speaker 1: going on in terms of the factors that d to 427 00:25:00,520 --> 00:25:04,160 Speaker 1: the altercation in the first place, and definitely for sure 428 00:25:04,400 --> 00:25:09,560 Speaker 1: the fact that American colonial writers portrayed it as a massacre, 429 00:25:09,720 --> 00:25:14,960 Speaker 1: specifically as spin later on. Uh, because, like we said, 430 00:25:15,160 --> 00:25:19,399 Speaker 1: the first massacre ever described in English, thousands of people 431 00:25:19,760 --> 00:25:22,960 Speaker 1: who were in Paris for a wedding, many of them, 432 00:25:23,000 --> 00:25:24,880 Speaker 1: a lot of them just were living in Paris doing 433 00:25:24,880 --> 00:25:28,080 Speaker 1: their jobs and living in their houses when they got murdered. 434 00:25:28,480 --> 00:25:34,520 Speaker 1: So on that cheerful note. So if you would like 435 00:25:34,600 --> 00:25:37,000 Speaker 1: to email us and share your thoughts, you can do 436 00:25:37,040 --> 00:25:40,320 Speaker 1: so at History Podcast at Discovery dot com. We also 437 00:25:40,359 --> 00:25:42,680 Speaker 1: have some new ways to connect with us are old 438 00:25:42,680 --> 00:25:44,959 Speaker 1: ways with new addresses. You can connect with us on 439 00:25:45,000 --> 00:25:47,800 Speaker 1: Facebook still but now we're at Facebook dot com slash 440 00:25:47,920 --> 00:25:51,320 Speaker 1: missed in History. We're still on Twitter at Misston History. 441 00:25:51,440 --> 00:25:55,240 Speaker 1: We're still on Tumbler at Misston History dot tumbler dot com. 442 00:25:55,280 --> 00:25:59,119 Speaker 1: And our pinterest has moved and expanded rather significantly, so 443 00:25:59,200 --> 00:26:01,800 Speaker 1: you can find us there at pinters dot com slash 444 00:26:01,880 --> 00:26:04,160 Speaker 1: mist in history. Do you like to learn a little 445 00:26:04,160 --> 00:26:06,600 Speaker 1: bit more about one of the subjects that Avisona wrote 446 00:26:06,640 --> 00:26:08,600 Speaker 1: so much about, come to our website. Put the word 447 00:26:08,800 --> 00:26:12,480 Speaker 1: math in the search bar, you will find how math Works. 448 00:26:13,000 --> 00:26:14,440 Speaker 1: You can do all that and a whole lot more 449 00:26:14,520 --> 00:26:21,680 Speaker 1: at our website, which is how stuff works dot com 450 00:26:21,680 --> 00:26:24,120 Speaker 1: for more on this and thousands of other topics. Because 451 00:26:24,119 --> 00:26:35,960 Speaker 1: at how stuff works dot com,