Test your senses -- and find out what is going on, when things go wrong. Maybe this is why I missed those shots in high school ... The color tile example is a great illustration of a point about words and colors taught by Ludwig Wittgenstein in his refutation of both British empiricism and mainstream analytic philosophy of language. Believe it or not! (See, for example, Wittgenstein's Remarks on Color).
Posted by Greg Ransom