When Texas sank back into the Ice Age, Patrick O'Grady was reminded of the good old days on a wind-scoured rockpile outside Weirdcliffe, Colorado, where the power shut off whenever it was most inconvenient, the candle lanterns and Coleman two-burner were close at hand, and a Lopi fireplace insert and a tall woodpile kept the toilets from exploding like a bottle of beer left overlong in the freezer.