Mid Century Modern Home Failures: Mid Century Modern Home Fails: Gravity Always Wins. In any good mid-century modern house, you had to have a cantilever or two somewhere. Cantilevering, basically, means to have a piece of the house jut out horizontally, unsupported from below. But we're not talking about minor chunks of the house--it might be entire decks, rooms, wings, pools. The more, the better. Any engineer will tell you that the best way to support a load is by vertical columns.