You read Feynman as if when he spoke he was a schoolboy thinking only about a blind test ...
No. If you are going to comment on a "too long post" maybe read it first. Did you even see what I wrote about how the Opera experiment scenario exemplified much of Feynman’s advice? It's much richer than just "blind experiment."
I’m not running experiments on fundamental physics. But as I said, when it comes to my own tests and I want to be more cautious, I adopt methods that align with Feynman’s cautions about "fooling yourself" (and like I showed, presenting my method and data to others for critique).
You either can’t admit how this fits well with Feynman’s words...or you just don’t understand Feynman (or the scientific method).
You keep talking about big theories, and how some biases are bad some good, but show NO instances where you have taken Feynman’s advice in terms of your method - that is the steps you took in your steps to ensure you weren’t fooling yourself.