I don't think you understand, you hands/wrists should hover above the computer just like the previous poster stated, like at a piano. Only your fingertips should touch.
Ah, I see. The picture says "wrist raising hand into 'claw' position" is incorrect, so I assumed it was the angle of the wrist that was wrong in the incorrect form. Like it's bad if I bend my hands into claws, which is impossible when pressing my wrists to the edge at an angle. You can place your wrists on the edge while keeping the wrist angle of the proper "hovering" form by lowering your elbows, but you can't touch the edge of MBP if you're doing the "claw" because if you touch it, your fingers can't reach the keys.
Well, I'm not sure if I'm making sense, but whatever. Thanks for enlightening me.