A very good letter from reader Gavin Miller, reposted with his permission -
Based on your recommendation I recently started reading Harry Potter and the Methods of Rationality, and I wanted to share a situation where I was able to apply the book back to my work.
There was a passage that caught my attention; when Harry is hearing his parents argue over something that could be resolved via an experiment (emphasis mine):
Hoping against hope that this time, just this once, they would listen to him. "If it's true, we can just get a Hogwarts professor here and see the magic for ourselves, and Dad will admit that it's true. And if not, then Mum will admit that it's false. That's what the experimental method is for, so that we don't have to resolve things just by arguing."