Plato’s Allegory of the Cave - Alex Gendler

source: TED-Ed    2015年3月17日
View full lesson: http://ed.ted.com/lessons/plato-s-all...
Twenty four hundred years ago, Plato, one of history’s most famous thinkers, said life is like being chained up in a cave forced to watch shadows flitting across a stone wall. Beyond sounding quite morbid, what exactly did he mean? Alex Gendler unravels Plato's Allegory of the Cave, found in Book VII of "The Republic."
Lesson by Alex Gendler, animation by Stretch Films, Inc.

Why it’s so hard to cure HIV/AIDS - Janet Iwasa

source: TED-Ed     2015年3月16日
View full lesson: http://ed.ted.com/lessons/why-it-s-so...
In 2008, something incredible happened: a man was cured of HIV. In over 70 million HIV cases, this was a first, and, so far, a last, and we don’t yet understand exactly how he was cured. But if we can cure people of various diseases, like malaria and hepatitis C, why can’t we cure HIV? Janet Iwasa examines the specific traits of the HIV virus that make it so difficult to cure.
Lesson by Janet Iwasa, animation by Javier Saldeña.

Can robots be creative? - Gil Weinberg

source: TED-Ed     2015年3月19日
View full lesson: http://ed.ted.com/lessons/can-robots-...
People have been grappling with the question of artificial creativity -- alongside the question of artificial intelligence -- for over 170 years. For instance, could we program machines to create high quality original music? And if we do, is it the machine or the programmer that exhibits creativity? Gil Weinberg investigates this creative conundrum.
Lesson by Gil Weinberg, animation by TOGETHER.