A coda on population decline and the alleged decadence of those who'd let the population fall to mere billions
Let's return to the argument over whether America's falling birthrate is caused in large part by cultural decadence, as Ross Douthat argues, or has little to do with moral degeneracy and decline, as I've argued along with many others, including Noah Millman and James Joyner, who points out that "the combination of education and the availability of reliable birth control has given women more control over their reproductive choices while the move from an agrarian to an industrial to a post-industrial society vastly reduced the incentives to have children."
Matt Feeney: Does "decadence" fit in such a novel choice structure? The past wasn't more fertile out of moral duty.
Matt Frost: We get to be judged on the basis of what we've freely chosen, not on what circumstances have imposed.
Matt Feeney: In which case we might be wrong without embodying decay from a previous state. I say frame the duty parsimoniously.
Matt Frost: Then let's come up with a pomo virtue: failure to choose the good thing which once was compelled by nature.
That got me thinking about the similarities between falling birth rates and climate change -- in both cases, would-be reformers are asking fellow citizens to significantly alter present behavior to address what they regard as a huge problem; and that problem unfolds over a time horizon so long that it's difficult for us to conceive of it accurately, or to respond as rationally as we do to more immediate concerns. In neither case would I describe failure to act adequately as evidence of decadence, precisely because it would be nearly (if not actually) unprecedented for humanity to successfully address problems with this mix of challenges -- time scale, imperfect knowledge, pluralistic values, and coordination).
What I mean by pluralistic values is embodied by the fact that these particular reformers are at odds with one another: The climate-change people believe we'll be worse off environmentally if the "increase the birth rate" people succeed, especially if they succeed in wealthy nations where per capita carbon output is relatively high. In neither his original column nor his follow-up post does Douthat address the environmental objection to a public policy that deliberately aims for constant population growth, except in an aside about what radical environmentalists might prefer.
What about regular environmentalists, whether of the climate change, water shortage, or "we're running out of fish" variety? I am agnostic about the ideal number of people on the planet, but it doesn't seem obviously implausible that "a bit fewer than today" is the "right" number. Nor does it seem implausible that declaring any number "right" is to impose an answer to a question where various deeply contested sets of values are at play, and a laissez faire approach is therefore best. Reflecting on a world that gave us China's "one-child" policy and that is likely to have abortion on demand forever after, does Douthat really want to make the birth rate a matter of government targeting? My instinct is to maintain the norm that these sorts of decisions are best made by individuals acting in an uncoordinated fashion to live as they see fit, or else who knows what reproductive reforms some latter-day Michael Bloomberg might try to impose.