@dtluna No, you built up a strawman.

> You're saying that no individual can figure out things on their own.

Yes.

> That is to say that YOU KNOW THAT NOTHING CAN BE KNOWN. This is contradiction.

No. It just means that we stand on the shoulders of giants. You cannot figure things out on your own because you don't have centuries to do it. Things can be known, but only if we start with the assumption that we already know some things.

If something doesn't smell right about the things we thought we already knew, maybe because of new observations, or just because of new angles of looking at things, we can go back and verify the chain. People do it all the time, and sometimes it leads to new breakthroughs.

But if all people are doing it all the time, there will be no time for new science and no time for new breakthroughs.