The total number of alternatives is then only 2 (white-black or black-white), even if the alternatives are still two on my part and two on yours. Note that, in this situation, something peculiar happens: if you look at your ball, then you know the colour of mine. In this case, we say that the colours of the two balls are correlated, that is to say, linked to one another. We say that my ball ‘has information’ about yours (as well as vice versa).
