2+2=4

Dieser Artikel auf Deutsch Why does 2+2=4…? The answer may not be as simple as one thinks. One should add that 2+2=4 is usually thought of as true, indeed the very paradigm of a truth, a certain necessary truth. 1 By ‘certain’ is meant that one can be sure that it is true. By ‘necessary’ is meant that the truth could not be otherwise. The matter of certainty is an epistemological one: how we know that 2+2=4. The matter of truth and of necessary truth is a metaphysical one: what makes it the case