Monday, 21 October 2013

Evolving Superpowers

Wouldn't it be cool to have super-powers?

That's the premise for a huge number of TV shows, movies, books, and of course comics. Apparently wondering what it would be like to be able to fly, read minds, teleport, or stop time is a pretty universal past-time.

And as every fan of superhero stories knows, one of the most important elements is the origin story--how the hero gets their powers. They could be from an alien planet, or be vested with an alien artifact. They could be an ordinary person with access to specialized technology. Radiation could be involved. Or it could be that humanity is evolving to its next state, and that state involves super-powers.

This last one is among the most popular. It's the basis for X-men, one of the biggest superhero franchises out there, as well as the TV show Heroes, and numerous other series. And it's the basis for the new TV series (which is a re-boot of the old TV series) The Tomorrow People.

I've watched the first couple of episodes of The Tomorrow People, and I liked it. I'm hopeful that, by focussing on just three powers, the show will be able to look at their implications with a little more depth than normal and avoid painting themselves into a corner (as in, "wait, doesn't Peter Patrelli have, like, every power? Why are there any world-threatening problems he can't solve?"). I also like the whole double-agent angle, and I hope the show has the courage to explore some murky waters and moral ambiguity around whether those with super-powers should be policed, and if so, how.

But what I want to talk about now is the science.

Yes, I'm sure you can already predict where this is going. "Evolution doesn't work like that, there would be many harmful mutations for every beneficial one, evolution can't 'look ahead', how could a single gene cause people to teleport..." Well, I'm not going to complain about those (mostly). I'm willing to cut a TV show some slack in its superhero origin stories; it's primarily entertainment after all. If I wasn't willing to suspend disbelief I wouldn't enjoy much media.

I do want to point out two things, though. First, the leader of the bad-guys is supposed to be an expert genetics researcher. At one point, when threatened by one of the super-mutants, he discusses how the tomorrow people can't kill anyone--they freeze up if they ever try to. Bad-guy-leader talks about how this will eventually be a beneficial mutation, but sadly right now it's a liability.

This is exactly the kind of mutation that can't evolve. Evolution has no "look-ahead"; genes proliferate because they're beneficial right now, not many generations from now. Having the scientist character basically rub the audience's face in bad science took me out of my suspension of disbelief for a moment. It's always better to leave some things unsaid and let viewer's imaginations fill in the details than to over-explain and blunder.

The more important issue is the show repeatedly referring to "the gene" that causes these superpowers. It also refers to the tomorrow people as being a new species, not entirely human--it's something they stress on multiple occasions in the first two episodes. The clear implication here is that a change in one gene can move you from "human" to "not-quite-human". And this, to me, is a problem.

In any species there is a fair bit of genetic variation--humans are no exception. You have different genes from the person standing next to you (unless you're standing next to your identical twin). A large part of that variation comes from sexual mixing--because you get half your genes from each parent (and because there's a lot of genes to pick each half from) you end up with a unique mix of genes.

And of course there are also mutations. Humans have an estimated average mutation rate of 175 mutations per generation--meaning the average person has 175 new mutations they didn't get from their parents. Since each person also inherits the 175 mutations that their parents had, and the 175 their grand-parents had, etc, etc, we're all walking around with thousands and thousands of mutations. (Sadly, after extensive testing, I can report that none of my mutations have led to latent super-powers.)

None of this variation makes any of us not human; it just means we're all unique. Humans simply aren't a mono-culture.

Why am I picking on this particular point? Because in our non-fictional world, people have used a small locus of genes to argue that certain other people weren't fully human. Genes like the ones controlling skin pigmentation, or hair texture, or even nose width. We have a long, sad history of classify some people as subhuman, and even today there's still some hold-outs to that view.

This may be part of the point in some superhero stories. Certainly in a number of the X-men stories the parallels between the mutants and oppressed minorities in the real world were intentional. I worry, though, that the emphasis The Tomorrow People puts on a single gene leading to a new species will lead audiences to internalize the message, "different genes always mean different (sub)species". This would be a disservice, regardless of what else the story might say about tolerance.

It would be nice to hear, just once, in a story about mutants with super-powers, someone point out that mutations aren't rare, and that genetic variation doesn't make some people not human.

Can we work on that, TV writers?

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