What about what I said was tenuous? Did you think I said the death penalty held no power to deter? I made no claims about that. I suggest you reread what I said, if that’s what you think.

I merely pointed out that the greatest deterrence comes from the likelihood of being caught, not from the severity of the punishment itself. This is the popular view. Here’s an article from the National Institute of Justice about it, with sources cited at the bottom: https://nij.ojp.gov/topics/articles/five-things-about-deterrence (Points 1, 4, and 5 may be of particular interest to you.)

This Wikipedia article may also interest you: https://en.wikipedia.org/wiki/Deterrence_(penology)

The reason I make no claims (and disagree with you) about the effectiveness of the death penalty as a deterrent is because there is no body of evidence supporting either view. You seem convinced that the death penalty is an effective deterrent on your instinct alone. I am uncertain how I am the one reaching tenuous conclusions here, lol.