Knowledge and observer consensus

On certainty by Wittgenstein, a similar idea is put forward. When everyone accepts a certain fact as true, it it's true. By logic you can't prove that a fact is true. Because there will be train of facts. One is true because some other fact is true, that fact this fact is true because even another fact is true. So there is no end(some say God is the end-but that is not logic). For instance how do you know that 2+2=4? We can't prove it, by experience know it. We are taught it is correct, when we are small. In Wittgenstein's words we have never made a mistake, 2+2=4 was always correct never wrong. So we know that it is correct.

TIME is the same. It is artificial, man made, when everyone comes to a conscientious, we all accept the flow of time.

This is very similar to the conscientious of crypto miners regarding accepting transactions to be inserted in the blockchain. They will reject transactions that are not in conformity with standards created by the crypto community. This is very similar to a scientist reading some new idea in the internet, if the idea is mostly in conformity with the accepted norms he will accept the idea provisionally, and read more on the matter to check what other scientists think about it. Only after coming to a conscientious, he will accept the idea. It is important to understand that everyone is not going to build a practical accelerator, to verify the results printed in experiments done in one practical accelerator. May be several other practical accelerators will check and publish the results. People at large will accept the results.

09.07.2018
Philosophical investigations: interesting remark: suppose a man from childhood lives in a cave without no interactions of any other human being from birth, hunts and sleep in the cave. Say to hunt he need to get up at dawn or he has to be hungry that day. One day he gets up late and cannot hunt. What will be the mental status of him. Does he ponder about his failure of getting up late and determine to get up early next day? Or he won't think anything just go hungry and sleep a bit more. Without language he can't think! The animals will just do that.