Source: John Farndon. Do You Still Think You're Clever? p. 27.
Warning: The author didn't study philosophy. "LONDON-BASED AUTHOR JOHN FARNDON studied earth sciences and English literature at Cambridge University but has since written on just about every topic imaginable."
The mistake, Wittgenstein argued, is in thinking philosophy can answer these questions. It comes partly from a flawed view of language that insists that if a word has meaning, there must be a thing attached to that meaning. The philosopher asks, 'What is reality?' 'What is justice?' or 'What is the mind?' and then goes looking with logic for the identity of that thing — and of course can't find it, because they are just words. That's why the search has gone on fruitlessly for centuries. But if you remember that language is variable, and words simply mean what people understand them to mean in a particular setting, the problem vanishes. That's why if you say Wittgenstein is 'right' and I understand what is meant by 'right' in this context, no more needs be said.
Indeed, Wittgenstein challenged the idea of logic as an ultimate arbiter of truth. 2 + 2 = 4 is not an ultimate truth, he asserted, but just something that makes sense arithmetically. If you were to say 2 + 2 = 97 it would not be false — just nonsense. The philosopher's task is to reveal such nonsenses.
Deciding whether a proposition is logically true or false is entirely missing the point, Wittgenstein went on to say, since language has many other meaningful uses. This may seem a trivial observation, he admitted, but that's the point. Philosophy 'does not teach us new facts, only science does that,' he wrote. 'But the proper synopsis of these trivialities is enormously difficult, and has immense importance. Philosophy is in fact the synopsis of trivialities.'
Googling the bolded clause yielded no simple explanation.