One complication is that capital punishment may make a murderer fight harder to avoid being captured, which could lead to more deaths. But, while marginal deterrence is important, I believe the resistance of murderers to being captured, possibly at the expense of their own lives, is really indirect evidence that criminals do fear capital punishment.
其中的一个复杂情况是，死刑可能会让杀人犯更加凶残来逃避被捕，也就会造成更多的死亡。但是，尽管边际震慑是重要的，我相信杀人犯甚至可能以自身生命的代价拒逋，的确是罪犯们害怕死刑的间接证据。