If there is any meaningful sense in which we can ask who is the greatest of all time, the answer can not simply be given by crudely adding up slams
Now that Novak Djokovic has won his 23rd grand slam tennis tournament (and there is little prospect of Nadal equalling him), many people are saying Djokovic is the greatest of all time. But many of these people also feel a certain reluctance in saying this. Federer seems at least as great.
But can the numbers lie? Yes!