Feynman tells how his father explained him inertia, when he was a child. Like the Blackawton bees, another example that children can ask, think and experiment scientifically.

[youtube=http://www.youtube.com/watch?v=HgAQV05fPEk] (via Laughing in Purgatory)

If you, like me, can’t recall immediately who Feynman was: There is some back ground reading for you on Wikipedia.