I was just about to return to the original post, and to that very point i.e. the use of the word "cultural"
It is interesting that of all the accurate/factual words Mr Adler could've used to describe the cart-use at Nine Bridges (e.g. practical, efficient, profitable) he used "astonishing" instead; and that of all the accurate/factual ways he could've characterized & explained walking (e.g. traditional, less expensive, healthier) he chalked it up to "cultural momentum and purism" instead.
That's not very friendly, or fair-minded it seems to me. [In that it does remind me of many political 'debates' these days, where each side casts the other in the worst possible light, but sometimes tries to hide it by using ostensibly value-neutral language.] I mean, even for me "cultural momentum" has a vaguely dictatorial tinge to it, and "purism" is pretty darn close to Puritanism.
Which is to say: I think that's part of the reason for my initial take/reaction on this thread. To approach the subject the way he did, it sure must 'mean' (and be about) a *lot* more for Mr A than merely whether more or less people are taking carts.
But what?