What History's Greatest Inventions Can Teach Today's Innovators

Professor and acolyte of the late Clay Christensen, shares surprising facts about 11 world-changing breakthroughs.A Chinese philosophy book from the year 142 references combining three powders together to create sparks that "fly and dance violently."It was history's first known mention of something that might be gunpowder.Over more than a millennium, philosophers, magicians, and healers would write about combining powders for mysterious or violent effect, and references of explosives being used in battle began cropping up in historic manuscripts.