Just so we're talking about the same kind of slap. If I had to guess, and I can only guess at this point, you're thinking... like... a slap, a swing with an arm.

I'm talking more like an open handed punch, complete with torso rotation and a pivot. Like a hook, just no fist.

oh, oh, got another one.

Look into the impulse of the strike, and the pressure area. Here, you're going to see a big difference, in favor of your position.

You'll have the same amount of force, probably with a significant increase in the speed that force transmits into the struck area. You're right. Past a certain point, though, someone doesn't get /more/ unconscious.

And, to anticipate your possible response, yes, they can end up /more/ unconscious to the point of death, but, cement does a much better job of that than any human body part.

No sir. Been slapped, been punched, and done both. I'm talking anecdotal evidence, you're talking engineering.