The heritability of fertility makes world population stabilization unlikely

Just because there's a political party committed to believing "the sky is red" doesn't make it political to say "the sky is blue".

I was the author of the "contraceptives are like antibiotics" comment btw. The point wasn't to make any extreme conclusion (I admit I can see how it could be taken that way in e.g. an abortion debate, but only by reading words between the lines that simply are not there). The point of that comment was not to score points in any political debate but to suggest an intuitive way to think about the results of the paper. Some commenters make the error of extrapolating straight lines, essentially saying "We observe reverse-correlation between education and birthrates over several decades, therefore they must be reverse-correlated forever". I pointed out an example, in a similar context[1], where such linear thinking would be wrong ("We observe the bacteria numbers are declining, therefore they must continue declining forever").

[1] Similar in the sense that they both involve living populations, population growth and decline, growth and decline caused by particular changes, etc.

Just to clarify this. Why is the former political and the latter not? Because one is false, and one is true?

I would argue that something is scientific or political no matter if its true or false. What counts is the way you try to convince others that it is true. Just as an example:

> The point of that comment was not to score points in any political debate but to suggest an intuitive way to think about the results of the paper. Some commenters make the error of extrapolating straight lines, essentially saying "We observe reverse-correlation between education and birthrates over several decades, therefore they must be reverse-correlated forever". I pointed out an example, in a similar context[1], where such linear thinking would be wrong

Here, you do not really explain why the intuitive thinking used by other authors (extrapolation) is less valid than the intuitive thinking you suggest: you do not explain why the comparison between humans and bacteria in the area of reproduction is valid, given the huge differences between humans and bacteria.

So when you say that "I admit I can see how it could be taken that way in e.g. an abortion debate, but only by reading words between the lines that simply are not there", that is kind of true: it is about the words that are not there - the words you have to provide to explain why your theory might not be wrong.

Exactly because things are not obvious, they need to be explained. As long as you do not explain the things you call obvious, you cannot judge if people do not understand a topic.

In that example, I'd say neither one is political. Now, if the one side started saying "Blue-skyers should be deplatformed", THAT would be political.

>Here, you do not really explain why the intuitive thinking used by other authors (extrapolation) is less valid than the intuitive thinking you suggest

I suppose if you really want to get down to brass tacks, my "contraceptives are like bacteria" comment was an instance of paradeigma, a rhetorical procedure popularized by Aristotle in which one attempts to help guide one's audience by presenting analogous anecdotes.

The difference between that and the extrapolators is that the extrapolators, at least in most cases I think, are unaware that they are falling prey to an unjustified extrapolation. None of them have come out and explicitly defended the implicit logic "Inverse correlation for the past several decades => inverse correlation forever". If someone DID want to explicitly defend it, they might use paradeigma right back at me, saying something like, "The inverse correlation is like the sunrise. We've observed the sunrise for a long time, and the sun will certainly continue to rise". Of course, such a rhetorical maneuvre would be unlikely to win many debate points, because the audience isn't stupid and can clearly see that analogy's too much of a stretch!

>it is about the words that are not there

But then basically you can twist anything at all into being political. I could say "1+1=2" and you could say "That's political! You're trying to imply something about binary genders, since you didn't explicitly throw out a disclaimer that you aren't trying to imply something about binary genders!"

Not that I'm trying to accuse you of consciously doing that... I think I'm guilty, myself, of sometimes reading politics into things that are apolitical. It can be particularly tempting to subconsciously categorize threads into teams, like, "This guy is X party and is on my side", "This guy is Y party and is the enemy". I've been trying recently to stop doing that, because I believe if I can get past that, there's a lot to learn from the people I thought of as enemies.

> Just because there's a political party committed to believing "the sky is red" doesn't make it political to say "the sky is blue".

Now you say:

> In that example, I'd say neither one is political.

That seems to be a contradiction.

> The difference between that and the extrapolators is that the extrapolators, at least in most cases I think, are unaware that they are falling prey to an unjustified extrapolation.

Yes, and I pointed out that also you do not give an explanation of why your proposed comparison is justified or not. (I do not think we need to involve the term "paradeigma" here, we can just use "comparison")

>> it is about the words that are not there

> But then basically you can twist anything at all into being political.

I don't really see the relation between my and your statement. Very generally: putting out statements without explaining the underlying thinking/reasoning/data at least exposes you to the accusation of being political, or unscientific, sure. Giving more detail, being more transparent about your thinking, explaining underlying concepts/data makes it easier for others to follow your reasoning, but exposes you to someone pointing out a mistake in your thinking. But well, that is science.

> I could say "1+1=2" and you could say "That's political! You're trying to imply something about binary genders, since you didn't explicitly throw out a disclaimer that you aren't trying to imply something about binary genders!"

I do not think that "1 + 1 = 2" falls in the same category as "the reproductive behavior of humans and bacteria are comparable". Therefore, in the example you gave, the answer is actually the political statement, as it brings in the completely unrelated topic of "gender" that no one was talking about and that has nothing to do with anything, just to try to win an unwinnable argument.