Theory 59/Goosebumps/Threshold lens
Reflex Needs a Cold Threshold
The claim
Piloerection occurs above a threshold in the ratio of cold exposure to insulation, so a well-clothed person does not respond at the same temperature.
01Mechanism
The reflex serves to trap air; the ratio determines whether the body registers a need for extra insulation.
02Prediction
Occurrence should track the ratio.
03Refutation
Occurrence tracking temperature would remove insulation.