The floor isn’t normally a surface I interact with. I interact with the seat of a chair, the top of a desk, and even the keys of a keyboard… but I don’t often interact with the floor. Occasionally I even deal with walls, but not the floor. This is completely different from my son. He’s constantly interacting with the floor. It’s not just because he’s quite short. Or, rather, not entirely. Gravity is a powerful force and he learns physics every day by watching things fall to the ground when he lets go of them. This is the reason that … Continue reading →