Brilliant Impersonators: Celebrating The Rip-Off

Inventors are our heroes -- the geniuses who keep progress surging forward. Copycats -- we call them pirates -- are a threat. But according to researchers, throughout human history, innovation has been fueled and sustained by imitation. Copying is the mighty force that has allowed the human race to move from stone knives to remote-guided drones. We're natural-born rip-off artists. To be human is to copy.