Did you ever try to fly, say, from the garage roof, using cardboard wings? Did you ever try to make a catapult and use your little brother as the mass? Or did you ever hide your sister and then forget about her. Did you ever think it would be cool to stick a bobby pin in an electrical outlet? Perhaps you enjoyed the mystery of mixing every chemcal that you could find to see what happens; or emptied fire crackers and collected the gun powder in order to make one really big boomer?