I'll tell you an explanation that I find commonly overrated and speculative in the extreme: the idea that things that succeed in popular culture do that because they hit the temper of the times.

Probably, if we looked at Da Vinci or Michelangelo with care, we'd see a historical particularity that the work is not treated as having. It's certainly true of Shakespeare.

Even though Star Wars is easily read as feminist for its time - and even for now, with Princess Leia's role - people wouldn't make a movie like that in 2016, where the guys are mostly the tough ones, and the women aren't in positions of authority.

So, I subscribe to the following reading: Star Wars is an essentially Christian tale.

And so it's no surprise that people who object to the death penalty on pure moral grounds also think it has no deterrent effect, and people who like the death penalty on grounds of retribution tend to think it has deterrent effects. They like that, and they believe that. I think with climate change we're seeing very much the same thing where those who deny climate change, they don't like that, and they don't believe it.

Those subject to capital punishment are real human beings, with their own backgrounds and narratives. By contrast, those whose lives are or might be saved by virtue of capital punishment are mere 'statistical people.' They are both nameless and faceless, and their deaths are far less likely to be considered in moral deliberations.

Great works - and I think Star Wars is a great work - are easily susceptible to multiple plausible interpretations. Some of them are pretty nutty, but the idea that we should see it as profoundly feminist, or as a deeply Christian tale, or as a Freudian exercise... I think all of those have some truth.