I noticed two things very quickly, my arms started getting tired and I was never quite sure if I was holding my hands in the right place to have my gestures get picked up properly.

> I was never quite sure I held them in the right place to have my gestures picked up by the cameras.

That's okay, I'm sure Apple will try a flat keyboard with no tactile feedback soon :)

They're making noise they're aiming for thinness again.