I started with hypotheses that steep roofs should be better and newer houses should be better. Nope. Shape and age are IRRELEVANT. Even the steepest roofs and the newest houses can form ice dams. Some metal roofs have icicles, but on a metal roof it doesn't matter because there's no way for the water to force its way through the membrane.This year (almost the same date!) the pattern is far more distinct. My morning walk includes a dozen houses of this species. Nice late-50s ranchers, well maintained, often still occupied by OEM owner. All the houses of this species have formed 5" high ice dams. No other houses have visible dams. Remarkably sharp correlation. Also unlike last year, I'm not seeing a growing trend of raking. It's just me and the other predictable regular. Not coincidentally, the other regular raker is one of the abovementioned OEM owners, and not coincidentally his house is the only exception to the abovementioned rule.
Polistra was named after the original townsite of Manhattan (the one in Kansas). When I was growing up in Manhattan, I spent a lot of time exploring by foot, bike, and car. I discovered the ruins of an old mill along Wildcat Creek, and decided (inaccurately) that it was the remains of the original site of Polistra. Accurate or not, I've always liked the name, with its echoes of Poland (an under-appreciated friend of freedom) and stars. ==== The title icon is explained here. ==== Switchover: This 2007 entry marks a sharp change in worldview from neocon to pure populist. ===== The long illustrated story of Polistra's Dream is a time-travel fable, attempting to answer the dangerous revision of New Deal history propagated by Amity Shlaes. The Dream has 8 episodes, linked in a chain from the first. This entry explains the Shlaes connection.