Re: Atemi waza: good or bad for Aikido?
The "one knuckle punch" is a type of strike that is designed for soft tissue areas and particularly nerve spots. The focus of energy, like the beam of a flashlight is focused into a narrow "beam". This type of punch would be a bad idea against strong, bones and bone plates. Attacking those areas are best done with broad knuckle fists, or knife hand strikes (depending upon area to be struck and trajectory of the strike).