When it comes to problem solving, getting enough sleep may truly be the
secret to success.
Take the case of Kate Miller, the owner of Charlie's Playhouse, a maker of
science education toys. Miller had been wrestling with a problem for weeks. But
one morning the answer popped into her mind as she woke up. She wanted to
design a game that would teach kids about natural selection while letting them
run around and have fun.
"It was the sleep that brought it all together," says Miller, 42, of