This idea is that every opinion can be contradicted We are big to an ant, and small to the universe. This contradiction extends to everything descriptive, and so, in the end, philosophy itself is only about context and semantics. It is true, that one plus one equals two, but that is not an opinion. that si pure mathematics. Opinions are , and anything other than pure mathematics, can be seen to be wrong to someone in another context. And so in the end nothing other than pure mathematics is true.