Here is a great science project-inspired Valentine’s Day card from one geeky-yet-considerate husband with a sense of humor to his overworked wife. Click on the image for a bigger version so you can read the hypothesis, variables, and eventual conclusion.
My hypothesis is that if I help with the kids when I get home from work, Mindy will be happier than if I sit on the couch, or check my email. Turns out my hypothesis was correct. (Shocking!)