So what is it with tents that make them the big homeless thing now? I mean, “a tent as a means of shelter for outdoor living” existed in the Depression, but Hoovervilles were shantytowns. Thinking of the iconic imagery of ‘80s-'90s urban homelessness, you might have built cardboard shelters, or mats atop steam grates, or refuse fires in a metal barrel, but I don’t remember tents