Here’s the permalink, but the formatting seems to be off, so you might also try here

It’s time to stop increasing in number now, though. At least until we establish off-world colonies.

I wish I could remember whose blog I read it on, but somebody had an interesting analysis based on the most densely-populated Earthly cities (Paris @ 45Kpeople/sq mi if I remember rightly?) that our current population could squeeze into Alberta (Saskatchewan), leaving the rest of the world for food-growing.

Just a quick calculation, if my 45K/sqmi number is correct, then 6 billion people would fit in 365 mi x 365 mi, which is a miniscule fraction of the earths’ available land.

So we’re not actually all that crowded just yet.

I hadn’t heard of it either except through the “Dem bones, dem bones dem dry bones… hear the word of the lord” song without knowing where it came from.. Either an overblown metaphor or a startling flight of fancy from my perspective.