(This article expands upon my response to a question posed by pjeby here)

I've seen a few back-and-forths lately debating the instrumental use of epistemic irrationality -- to put the matter in very broad strokes, you'll have one commenter claiming that a particular trick for enhancing your effectiveness, your productivity, your attractiveness, demands that you embrace some belief unsupported by the evidence, while another claims that such a compromise is unacceptable, since a true art should use all available true information. As Eliezer put it:

I find it hard to believe that the optimally motivated individual, the strongest entrepreneur a human being can become, is still wrapped up in a blanket of comforting overconfidence. I think they've probably thrown that blanket out the window and organized their mind a little differently. I find it hard to believe that the happiest we can possibly live, even in the realms of human possibility, involves a tiny awareness lurking in the corner of your mind that it's all a lie.

And with this I agree -- the idea that a fully developed rational art of anything would involving pumping yourself with false data seems absurd.

Still, let us say that I am entering a club, in which I would like to pick up an attractive woman. Many people will tell me that I must believe myself to be the most attractive, interesting, desirable man in the room. An outside-view examination of my life thus far, and my success with women in particular, tells me that I most certainly am not. What shall I do?

Well, the question is, why am I being asked to hold these odd beliefs? Is it because I'm going to be performing conscious calculations of expected utility, and will be more likely to select the optimal actions if I plug incorrect probabilities into the calculation? Well, no, not exactly. More likely, it's because the blind idiot god has already done the calculation for me.

Evolution's goals are not my own, and neither are evolution's utility calculations. Most saliently, other men are no longer allowed to hit me with mastodon bones if I approach women they might have liked to pursue. The trouble is, evolution has already done the calculation, using this now-faulty assumption, with the result that, if I do not see myself as dominant, my motor cortex directs the movement of my body and the inflection of my voice in a way which cle...

Ashraf Ali Djauhari

Ashraf Ali Djauhari

Ashraf Ali Djauhari

Ashraf Ali Djauhari

Ashraf Ali Djauhari

Ashraf Ali Djauhari