Last week, I referenced the idea that Progressivism is a meme virus, rather than a meme mitochondria, an idea I want to explore in a bit more detail. How do we know Progressivism is viral rather than mitochondrial?

Simply put, because Progressives do not reproduce themselves. Mitochondria can only reproduce themselves by being passed on to your offspring, and thus are incentivised to maximize your reproductive success. (Or that of close relatives of yours who also carry your mitochondria, like siblings.)

By “reproduce themselves,” I mean “have enough children to keep their population from declining,” or about 2 kids per couple. (Technically, the average has to be slightly higher than 2 just because occasionally, terrible tragedies do occur, and kids die.)

This is the point in the conversation where Progressives jump in and insist that they really do reproduce themselves. Maybe not personally, of course, but they totally have some gay friends who are going to get on that IVF and have a whole bunch of children now that gay marriage is legal.

I have actually seen this argued.

Of course, any common idiot on the street has noticed by now that there’s no atheist equivalent of the Duggers, and that Mormons have a lot of kids. But if you can’t believe your own lying eyes, maybe statistics will help:

Only conservatives are above replacement. Everyone else, especially the extreme liberals, is being replaced by the children of conservatives.

If you don’t believe Jayman, because he’s too conservative or liberal or whatever for your ad hom tastes, here’s data from NY Mag, which definitely takes a liberal slant:

If you’re curious about time, it wasn’t always like this:

Mass media, birth control, abortion, etc., are all very recent inventions.

(In case you’re wondering, this is a world-wide phenomena:

Afghanistan (TFR around 7) is not known for its progressive views on women’s rights or homosexuality. In Nigeria (one of the purpleist on the map,) homosexuality is illegal and punishable by death. In the slightly less purple Democratic Republic of the Congo, same-sex marriage is banned by the constitution.

A few other maps for comparison:

Sources: WomanStats Map; Wikipedia: Religiosity, Literacy Rates. H/t Suchanek.

At least currently, all of the “nice” countries that people want to live in or move to have below-replacement fertility.)

But lest I be accused of comparing apples to oranges, let’s go back to our own countries.

What happens when conservatives outbreed liberals? The simple answer is that liberals get replaced.

If you still don’t believe me, I’ll run through it step by step. (If you do believe me, you can skip this part.)

Let’s suppose we start with a town of 10 liberals and 10 conservatives. The liberals have a TFR of 1 (1 child per woman,) for 5 total children. The conservatives have a TFR of of 3, for a total of 15 children. The second generation is therefore 5:15 liberals:conservatives. In the second generation, Liberals have 2 or 3 kids (it’s hard to actually have 2.5 kids,) and conservatives have 22 or 23 kids. Fourth generation, 1 liberal kid, 33 conservatives.

And yet, a quick glance at voting trends in the US over the past 70 years indicates that the country has been moving steadily more liberal. Take, for example, the shift over the past few decades in favor of gay marriage.

Liberals remaining 50% of the electorate isn’t just an artifact of having a 2-party system; liberals have been convincing people to become more liberal. Conservatives, meanwhile, haven’t been convincing people to become more conservative.

Meme mitochondria propagate vertically–from parent to child–not horizontally, and are unattractive to people who weren’t raised with them. Meme viruses propagate horizontally–from peer to peer–and so must be attractive to others.

Progressivism is therefore propagating virally.

To be fair, ideas that began virally can become mitochondrial. Christianity in its early stages was viral, but later became mitochondrial. For an idea to become mitochondrial, it has to confer greater survival benefits on people who hold it than on people who don’t. Right now, Progressivism isn’t doing that.

The interesting question, therefore, is what Progressivism will do over the next 50-100 years. Remember that this situation of liberals not reproducing themselves is (most likely) a novel result of recent technological innovations. Will society keep moving leftward as Progressivism keeps spreading successfully to the conservatives? Or will future conservatives, having been born to the conservatives least susceptible to Progressivism in the first place, become, essentially, “immune”?

Or will the immigration of people with much higher birthrates and very different values render the whole business moot?