Now back to the question “how many 777 are there in π.” When I say that the case of the small first nr. gives this question its first meaning this is to say that our attitude towards this expression is due to it sounding like that other kind of question. Our attitude can however change if I now remind you of the cases I've just been talking about. Why should we ask this question? – “But don't mathaticians try to solve it , or similar questions?”
Why should we call what they are doing “trying to solve this question”. Why should we not say they add new constructions to mathematics. Now concider this expression: “Surely, either there are n times 777 in π or not!” A) this is a tautology, B) if it means that you can't help yourself & must ask this question, I contradict you & say that you needn't look at it that way. – Now e.g. you say that the difficulty about that question is that the prop. “there are 777 in π” can only be proved in a general way, whereas the prop. ‘there are’ can be proved by finding a case of 777 in the deveopment. I should say let that teach you something about the sense of the question! Remember that a position or a move in a game gets its sense from the game. We are liable to get the idea that the mere form of words has something in it which we must find or of which we must say that we can't find it.
  Now to the question “are there 777 in μ places”. “Surely there are, or there aren't”. This means nothing more nor less than “We know what it means to say
‘that there are’ or ‘that there aren't’. Now it is obvious that we can't straightforwardly say we know in this case what it means, because to explain what it means we should have to point to small numbers & why should I accept this explanation for μ? This is all without much interest as long as I dont actually set the task “find out about μ” for we could use μ as example though we never thought of answering the question with respect to μ! – But if now we try to find a new method of calculating the answer for μ then indeed we may ask ourselves in what sense we can be said to answer the old question, in what sense we can say that we've found a shortcut. It will depend on the method actually applied. Ask yourself: What are we to do if somebody actually calculated f(μ) by counting & found a different answer? I should say: to attribute it to human frailty ‘that we can't develope all places of π’ is just thoughtless, you wouldn't talk like that if you saw the use of your words clearly. But this is like saying: to say 0:0 = 1 is thoughtlessness you would not say so if … But one can never
know this & someone might say this & we would respect it.
  What are we to say if someone tells us about a proof: “that all mathematical questions can be solved”.
  One can use an appelation for a ‘proof’ without regarding it as the answer to a question.