I did so, awhile ago. Came to that exact conclusion (using our brains and what not)
But then I thought, "If I bother making that point, Coolie will just try and spin it into some sort of "Tent cities never existed before now" crap. Which is a flat out lie (NYC/LA anyone?). So ultimately, I never bothered to say so because you can lead an idiot to the truth, but you can't make him learn
