I would always give Wittgenstein the benefit of the doubt on such relatively trivial things given 1) this work was checked thoroughly by the likes of Bertrand R

I would always give Wittgenstein the benefit of the doubt on such relatively trivial things given 1) this work was checked thoroughly by the likes of Bertrand Russell 2) the topic has evolved considerably over the last ~100 years, or at least the language and notation used to talk about it, which may lead to misunderstandings for today's readers.