There's no getting away from bias. The good news is that LN bias is the correct one in this case.

We're human beings not robots or AI. But there is an objective reality that we can struggle to find.
But to argue that all of this evidence pointing at Oswald is wrong - all of it planted or faked or worthless - is a useless exercise. One can make that claim against the evidence for any event. So where does that lead to?
A sort of nihilism. Why even come here and comment day after day after day, thousands of posts, all saying "No, no, no"? Brennan lied and Brewer lied and Mcdonald lied and the fingerprints are faked and the photos are faked or wrong and the handwriting is wrong. That leads to nowhere.
Look, if people want to devote much of their lives to defending Oswald then go for it. But don't pretend to be interested in trying, as best as we can, to determine who shot JFK. Because you're not interested in that; you have some sort of bizarre need to defend this miserable waif Oswald. Waif. That means abandoned: that's how I think Oswald saw his life and his world.