What do heart surgery, the moon landing, automobiles, the lightbulb, home computers and airplanes have in common? Answer: They were all thought impossible at one point by some really smart people. It’s a good thing that history’s most brilliant scientists, inventors and entrepreneurs gave things a second thought. This upbeat, humorous and inspiring video takes a look at some of history’s greatest inventions and achievements and at the naysayers who said they couldn’t ever be done.