Edison was my hero when I was a kid. I used to believe of Edison as one of the greatest inventors of all time. As I admired him, I started digging about him. Slowly I realized Edison was one of the greediest, heartless, criminal of all time. He not only bought and stole inventions of others, he cashed on killing of people. Most people know how he screwed Tesla. What many people don't know about Edison is that his employees created electric chair which is considered as device of cruel punishment. So, he made money by selling this device of painful death. He even took opportunity to film the electrocution and killing of Topsy (elephant) to demonstrate superiority of his DC system over Tesla's AC.
Edison is an example of what one should never become in life.