Typically, the "optimal thinking" argument gets brought up here in the context of evolutionary psychology. Loss aversion makes sound reproductive sense when you're a hunter-gatherer, and performing a Bayesian update carefully doesn't help all that much. But times have changed, and humans have not changed as much.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
If continuing the discussion becomes impractical, that means you win at open threads; a celebratory top-level post on the topic is traditional.