Controlled Rest, I do understand.
It is not about whether you know that the other pilot is playing with the stick it is about knowing which corner he has parked it in.
The red button plainly does not work in the heat of the moment in TWO crashes now. In both cases two pilots were "flying" the aircraft simultaneously. I know there are big arrows and loud audio, but there is also a stall warner, ECAM warnings, a lot of "what is it doing now" confusion and human startle factor. In the Air Asia crash the red button was pressed twice but for only short periods .... so it was effectively useless in this scenario with these two pilots. It was also useless in AF447 as it was not used at all. Have there been any examples from the cruise where it has been used successfully? I rest my case.