This is actually true. Plenty of accidents has happened because of this.

I am not saying trusting your memory is always false or true. Most of the times it might be true. It's a heuristic.

But if someone comes and deny what you did, the best course of action would be to consider the evidence they have and not assume they are stupid because they believe differently.

Let's be honest, you have not personally went and verified the rocks belongs to Moon. Nor were you tracking the telemetry data in your computer when the rocket was going to Moon.

I also believe we went to Moon.

But all I have is beliefs.

Everyone believed Early was flat 1000s years back as well. They had solid evidence.

But the humility is accepting you don't know and you are believing and not pretend you are above others who believe exact opposite..

It's a misguided line of reasoning because the "belief" thing is a red herring. Nearly everything comes down to belief at a low level. The differences lie in the justifications.

As you say, you should have the humility to consider the evidence that others provide that you might be wrong. The thing with the various popular conspiracy theories is that the evidence is conspicuously missing when any competent good faith actor would be presenting it front and center.