It was snowing. I stared out the window. It was coming down mightily, with accompanying wind gusts. I checked the temperature.

This was complicated by the fact that the thermometer outside the kitchen window, the weather app on my cell phone, and the car all disagreed vehemently with each other. To settle the dispute I turned on the radio, which produced a fourth disparity. The temperature should be a fact, not a subject of speculation, anyone who has ever been involved in a case alleging a buttocks-first free fall, belly flop or sideways catapult à la Benny Hill resulting from snow and ice knows well, but here were four separate versions of the facts, all presumed accurate. I decided that I would determine how cold it was by going outside and guessing.