I was referring to this specific hackathon, which obviously succeeded.
More generally, Computer Programmers as a whole are 22% women. Many hackathons where I am are wildly oversubscribed; any hackathon that is at least 127% oversubscribed should, if they have average gender representation for the profession, be able to have a 50/50 split. Since I've seen 2x or 3x oversubscription rates, that is not unreasonable.
If you include designers and business people, it takes even less oversubscription to get there. 29% of technical managers are women, along with 54.3% of designers.
So, it's not at all clear that there are, in fact, enough high-quality female programmers to have a 50/50 split in the field at large, which is clearly the important point.
But I really started this comment to pick a few minor nits. So feel free to ignore the entire comment.
1) They didn't achieve 50%, actually, even with all that work.
2) 127 * 0.22 = 28% . Assuming your industry estimates are correct, you're going to need better than 100% oversubscription to get 50% women, actually.
3) And even that only assumes random sampling. Which is actually clearly a crazy assumption. And I would take this hackathon as proof of that, actually.
4) I'm now on a team that's roughly 13% female. That's a new maximum for my career. So with that in mind, I'm curious where you got that 22% figure.
2) It's 227*0.22; you still get the original 100% too. If it were 27% oversubscribed you'd get 28%.
3) It is an assumption, though one that fits with my experience of hackathons (they tend to be 15-20% women.) I wasn't saying it's guaranteed that women will want to attend, just that there are qualified women who could.
Do you have a source for that?