Lucy: "Mom, how does the baby grow bigger?"
Me: "Well, he gets some of the healthy food Mommy eats and uses it to grow."
Lucy: "So when we eat healthy food we grow bigger?"
Me: (momentarily distracted and thus not responding ...)
Lucy: "Mom? Did I make a good hypothesis?"
Me: " ... Um, yes. Yes you did."
Her Dad was so proud.
(My two favorite scientifically-minded people, camping out in the backyard for Memorial Day 2010)