[cauterized]

They're supposed to float. It's much better ergonomically.

Look for images/videos of professional pianists -- ideal wrist ergonomics for typing are very similar to those for playing piano.

Specifically, your wrists should be loose and relaxed, so that your hands would hang down loosely if the fingers weren't resting on anything. My piano teacher used to spend a few minutes at the beginning of each lesson shaking my forearms until the wrists loosened enough!