A blind man has four pills: two red and two blue. The pills are identical in tehrms of shape, size, texture, weight, smell and so on. Only the colors are different. So the blind man cannot distinguish between a red pill and a blue pill. Now the blind man must consume exactly 1 red pill and 1 blue pill. If he consumes two red pills or two blue pills, he will immediately die. What strategy will enable the blind man to ensure that he consumes exactly one pill of each color?