[ghaff]

Sports or the arts. You probably don't major in music in college if you've never touched a musical instrument.

I took MIT's "Intro" to Programming and Algorithms I think it was called (6.001). I'm not a professional developer but I've written a fair bit of code including Python which is what the class used. I'm pretty sure that, as an undergraduate, had I never seriously used a computer command line before, there is no way I could have gotten through that course.

The same dynamic is largely missing from other engineering courses, as well as the sciences, which don't really expect more than high school classroom work, an interest, and general aptitude.

And it's certainly true that CS (the math degree) gets munged with CS (the engineering degree). MIT's a bit more engineering focused (the degree is in the engineering school). There are also some variants of the degree that are more or less engineering-centric.

[moshmosh]

To dip my toe into somewhat-dangerous waters, I suspect that if there's a major and highly effective filter other than simple interest (as some data re: more- and less-restrictive societies suggests) keeping women out of CS, it's mainly this preference (by CS programs) for experienced long-time computer geeks in CS freshmen classes, and hostility to those who aren't. Which is still, kind-of, an interest-related filter, but a bit of an odd and harsh one that punishes not having taken a strong interest very early.

You're not going to meet that kind of abrupt and early resistance on the path to becoming a doctor because you didn't spend tons of your free time as far back as junior high reading anatomy books or practicing dissection, for instance.

[ghaff]

I don't think it's the only factor but it's been my belief for a long time that it's one factor. If you assume 18 year olds entering CS programs started to widely use computers and game consoles as kids in the mid to late 80s, that lines up well with the decline in women entering CS. [1]

Again, there are almost certainly other factors, and correlation is not causation, but there is at least logical correlation.

To your broader point, a lot of kids enter college with only a broad idea of what they want to do. And high school courses don't really offer much guidance. High school science classes have very little to do with their counterparts at good colleges.

[1] https://www.aei.org/carpe-diem/chart-of-the-day-the-declinin...

[moshmosh]

Right, agreed on that not being the only factor, but I do think it's suspiciously-sufficient-looking to explain why CS was becoming a boys' club even as women were reaching parity with men in terms of proportion-of-the-sexes in medicine and law, and to some extent business more generally. "Computer nerds are so remarkably and uniquely sexist that they not only avoided this trend, but sharply reversed it" has never... quite rung true to me. Again (because you have to over-specify on this topic or risk angering people) not because there's no sexism among computer nerds or computer companies, but just because I don't get why programming/CS would be uniquely afflicted with that, to such an apparently huge—in order to explain the sharp difference—degree.

Meanwhile there are definitely a lot of gatekeeping-assumptions about childhood interests in modern CS programs, which one would expect to have gotten stronger as more and more freshmen actually could have had experience with computers on their own—so, starting with late-80s freshmen, mostly, with the effect getting stronger fast after that. That lines up so well with the data on CS-program-enrollment-by-sex that it seems to me like the factor to examine before we go looking for other explanations. Again, to be excessively explicit due to the topic, I mean this in terms of accounting for the gender gap in programming, not in terms of addressing any other issues of sexism in the industry, which I am not denying exist.

[ghaff]

There are some fields--notably within engineering, mechanical engineering--where women have historically had low participation. But one probably doesn't need to examine gender stereotypes too deeply to see why that might be the case. But there haven't been the large shifts there we've seen with CS.

[908B64B197]

> You're not going to meet that kind of abrupt and early resistance on the path to becoming a doctor

It's much more inclusive indeed. If you can afford the mandatory completely unrelated undergrad you need to have completed to even apply to med school and the travel fees to attend your in-person interviews of course.

[moshmosh]

Yeah, the educational commitment is definitely much higher. I just mean they don't expect you to have put hundreds of evenings, Saturdays, and Summer afternoons into wholly-self-motivated learning about the field by the time you're 18, or else have a very rough first couple years.

[908B64B197]

> I just mean they don't expect you to have put hundreds of evenings, Saturdays, and Summer afternoons into wholly-self-motivated learning about the field

No, instead it's unrelated to the field so you can grind fractions of GPAs against other applicants. At least, CS is kind enough to let everyone try the real thing.

[908B64B197]

> I'm pretty sure that, as an undergraduate, had I never seriously used a computer command line before, there is no way I could have gotten through that course.

They don't call it the firehose for nothing. [0]

[0] http://hacks.mit.edu/Hacks/by_year/1991/fire_hydrant/

[ghaff]

I'm very well familiar with the firehose :-) But mechanical engineering there, for example, did not require anything more than 1.) The ability to get into MIT and 2.) The normal high school curriculum. It didn't require years of experience in stripping down engines and rebuilding them. and, OK, 3.) Dealing with the firehose. :-)