(Sektion 142: Philosophische Untersuchungen von Ludwig Wittgenstein).

142. Only in normal cases is the use of a word clearly prescribed; we know, have no doubts, what we say in this or that case. The more abnormal the case, the more doubtful what we should say becomes. And if things were quite different from what we actually understand them to be----if there were for example no characterist expressions of pain, of fear, of joy; if rule became exception and exception rule; or both become phenomena of roughly equal frequency----this would make our normal language-games lose their point.--The procedure of putting a lump of cheese on a balance and fixing the price by the weight would lose its point if it frequently happend that such lumps wihtout any obvious reason suddenly grew, or shrank. This remark will become clearer when we talk about such thing as the relations of expressions to feelings.