That's true, and interesting, but I'm not sure it's relevant. People have to buy the houses that are on the market, and smaller houses tend to get torn down to

That's true, and interesting, but I'm not sure it's relevant. People have to buy the houses that are on the market, and smaller houses tend to get torn down to make way for larger ones. Why tweak the numbers that way and not others (e.g. to account for student-loan debt)?