A patent, or invention, is any assemblage of technologies or ideas that you can put together that nobody put together that way before. That's how the patent office defines it. That's an invention.
As a dad, he thinks that his philosophy is morally correct. He has no conscience whatsoever about letting his kids put a penny in a light socket to find out electricity is not so good for you, and if you want to learn how to swim, you have to be thrown into the deep end.
The quickest way to defuse fear or insecurity or anger is usually humor. I think comics figure that out quickly, and, once you figure it out, you think, 'Hey, if I can do this and get paid, that would be kind of cool.'