An outer layer is clearly necessary in these conditions, even when you're vigorously exercising (which I tried to do in the freezer until I quickly became lightheaded from the icy air).
An outer layer would simplify the situation.
mnli hypothesis: An outer layer would simplify the situation. premise: An outer layer is clearly necessary in these conditions, even when you're vigorously exercising (which I tried to do in the freezer until I quickly became lightheaded from the icy air).