Certainly, building new housing works well at a policy level. But calling for new housing doesn't seem to work at a political level. We've been fighting this fight ever since the financial crisis and every election cycle brings us a few victories with an equal number of reversals. And it isn't only within the left that the opposition arises; it wears red in progressive neighborhoods, but it seems to have a taste for brown when that's convenient.

I don't think that the urbanist movement can succeed if it is driven by policy wonks who want to throw out the rulebook and impose reforms from the ivory tower without a real small-d democratic political strategy. Many of us are used to fighting the political battle against climate change by being Absolutely Correct and expecting that Science with her indefatigable armies of Reality will guard the flanks. A fully economic fight like this one just doesn't have the same kind of inevitability. Every step forward on the ground weakens the sense of urgency in the legislature, leading to an equilibrium trap without a vigorous political movement that can hold momentum.

Nerds do not usually want to do politics, but in housing you have to do politics.