Scientists do not define what is and is not evidence per se. Period.
As to this:
Research is a method used by child molesters, sports commentators, novel writers and rubato. To claim that literary/historical criticism is the province of "scientists" because it involves "research" is ludicrous. Science may help to determine if an ancient writing is truly ancient - but that's not the point. If is is ancient, science leaves the building and turns it over to learned professors of linguistics, history and other arts.There may be some problems with Plato's writings, but he wasn't the only one who wrote about Socrates. And research is a method used by scientists.
Science can be employed to determine if a painting is old enough to be by Rubens, but it cannot speak as to whether such a validated painting is "evidence" of Ruben's growing or deteriorating mastery of form - art experts do that.
But for the record, I mentioned the various sources for Socrates by name - so don't pretend you just invented that knowledge. They contradict each other. How's some "scientist" doing on that comparison you claim they are busy with - how's the observation, theory and prediction going there?
Over and out
Meade