The “Snow is white” example bothered me every time. I suppose it is because I believe a single snow flake is transparent, and snow becomes white as these transparent snow flakes refract that light around more. I know snow looks white. I would have felt more comfortable with an item that was pigment white, that does equally reflect the visible spectrum, when providing an example of an incontrovertible fact.
The “Snow is white” example bothered me every time. I suppose it is because I believe a single snow flake is transparent, and snow becomes white as these transparent snow flakes refract that light around more. I know snow looks white. I would have felt more comfortable with an item that was pigment white, that does equally reflect the visible spectrum, when providing an example of an incontrovertible fact.