Book excerpt: Two cavemen invent EVERYTHING! But will they be happy? Inch and Grub are cavemen. Grub's cave is bigger, and he says that makes him the best. So Inch adds a water feature to his cave. But Grub has made fire! So Inch makes a chair. And a house. And a CAR. Grub, meanwhile, has made a castle and a train and a radio! And so the contest spirals and spirals ... until they each have a HUGE wobbling pile of STUFF. But what happens when the piles collapse? A funny story about being competitive and how STUFF is not what matters in life.