A scientist never knows what the truth is before he/she sets out . They may know what it might be from the work of other scientists [that is why scientists work co-operatively]. so it is not a question of acheiving what he/she wants to find but rather an attempt to prove the work of the other scientist. If you are the first to attempts a solution to a problem then obviosly you deserve the most keudos, but it is a long hard wait until some other people check everything about your work and that of others . So facts are not easily come by.

Then if a new theory is formed , you may have to start all mover again

If you have ever done any original work and are convinced that you have satisfied a whole crowd of people you will know how hard it is, Verifyingg a fact is becoming harder and harder ,mostly because of conspiracy theorists pseudo science.

I do not think that philosphers will ever match the care that scientists take , becuse basicall they do not have to prove anything although they do get røund to some wisdom.

What you "want" is usually the biggest barrier to finding truth.

Yet many fall into the trap laid by religion, politics and commercial selling of believing that "I want" is a synonym for truth. You bait traps with things that look wonderful.

Truth is only as good as the evidence that supports it. If the evidence is flawed, misunderstood, incomplete, or misrepresented then truth is no longer valid.
Are the plates face down or are they facing up? Which is true?

Looking into the soul could be a stumbling block in and of itself let alone individual bias.

For en sics pennyworth suggests that truth is often irrelevant.

My insurance lady and I are great friends and she is one that always says it is hard to figure out what is true these days. She is also a Trumper and a Republican but she denies it. I often tell her that we are all people that are pretty much the same but we have different social media sources. This is it in a nutshell. Search for the truth rather than what you want to believe.

That's a noble attitude you have there, and, I agree with you. Whether you can act truthful to what you say is a different matter altogether. I find it difficult, don't you?

My truths are built on facts, howsoever uncomfortable I find those facts to be.

Yes, it’s human nature to be human while denying that we’re human. We all do it and we all deny that we do it.

I do want to know the truth, even if it's uncomfortable and doesn't fit with what I wish the truth to be. I am strong enough to adjust my "beliefs" accordingly. It's only through knowing the true facts that one can make the best choices going forward and not be taken advantage of by those who wish to keep us in the dark. Learning the truth, might lead to more questions, but for many of us that quest is more life affirming than being suppressed by comfortable platitudes.

Desirability bias.

Yes, exactly!! People believe what they want to believe... so if they like a story, they accept it as truth because it fits in with their core values and belief system. But if they are truly interested in the truth, they will fact-check or verify. If through fact-checking I find an article someone posted to be untrue, that causes them dissonance, so they reject it and question the veracity of both me and the fact checker. We've all been there.

You're just saying that to fuck with my belief system

To quote Jack Nicholson, “You can’t handle the truth”!