I actually dislike the focus on pulling in people from physics/computer programming/math. As Dreaded_Anomaly mentions, these are fields which have just as bad of a gender ratio as here. As long as we continue focusing on those fields, I don't think the gender ratio problem is going to get much better.

Also, I don't think there's anything inherent in rationality that means that it requires physics/programming/math types. But I think our current community is generally set up in a way to self-perpetuate that.

I can understand that STEMM types might more frequently lean towards rationality, which is why recruiting from there is often a suggestion. (If you have a .5 probability that a random intelligent STEMM person would be amenable to rationality, but only a .2 probability that a random intelligent person of another field would be, for example.)

A way to get around that: Personally, I've found that anyone I have a match of >94% on OKC has a high probability of being the aforementioned Rationalists Who Just Don't Know It Yet. I myself was "recruited" this way. Dated someone from OKC (We no longer date, but are still REALLY good friends) who I was a 99% match with, and they pointed me toward HPMoR, then LW, etc, all while modeling "proper rationalist behavior" in our discussions. I think that's all that it takes, often, to get someone interested in rationality (once you filter for interest, whether you use okc for this or not)