Talking the "Sleep" button...

Back in 2000s, there were some popular cheap external keyboards with three extra buttons between the delete/end/pgdown row, and the arrows.

The first of those buttons was "power off" sitting just below "Delete".

Example: https://www.flickr.com/photos/hendry/330827330

It was pure madness because it was guaranteed to push this button by accident on a daily basis.

I can't imagine someone using computers for more than 5 minutes could have designed this.