Knowledge, or at least understanding, doesn't always move on,

In history, as in all fields, knowledge and understanding advances.
Knowledge is gained, never lost.
Are you seriously claiming that all the historians have gone wrong and the Mudcat Comrades alone hold the truth of history?!

DtG, we have not examined every swan, but if there was a red one somewhere, we would have heard.

I only claim that the history books agree my points.
I read them. That is how I know.

The Comrades have failed to find anything written for at least twenty years that disagrees.
How could they? There is nothing.

They still think that the history books are wrong and they are right.
Only conceited, ignorant fools could possibly believe that.