I know of TS clearance holders who have significant ties to Iran, Syria, Russia, and Afghanistan, but have renounced those citizenships and are loyal to the US. The clearance process works to figure out what levers those countries could still pull on them - foreign property and close family still there are the big ones.

This sequence is followed by differential equations courses for the physicists, engineers, and most mathematics majors. Then every college has a mechanism to generate mathematical maturity in their first or second year pure math majors - sometimes it's a proof focused version of linear algebra, sometimes it's a specific Introduction to Proofs course, sometimes it's a discrete math/set theory course, sometimes it's groups/rings or real analysis but slowed down a bit at first. This gates the upper level pure mathematics courses, where most programs require one semester each of algebra and analysis and some number of elective courses.

A general definition of continuity typically doesn't arise until a topology course or a second semester real analysis course. It is entirely possible to graduate from most mathematics bachelor's programs in the US without taking either of those courses.

Also I always kept Pentel Twist Erase III mechanical pencils with 0.5 mm lead, Hagoromo chalk, and a 4 color set of chunky expo markers in my bag.

Scientists and engineers overall include a lot of disciplines that are not CS. Biology in particular is frequently majority female.

To clarify, I don't know much about Finnish mental health in particular as opposed to the general trends in Northern Europe.

We know that the longer psychosis goes untreated/the more times someone goes off the meds, the harder it is to treat, and that what happens in the first few years of someone developing a psychotic disorder makes a huge difference in long term outcomes.

An American might develop psychosis in their mid 20s, end up committed for a few weeks and placed on antipsychotic pills until they're no longer floridly psychotic, and then go home, not follow up with doctors/refill meds, and end up on a cycle of this with more and more brittle symptoms until they're homeless and have no real chance of recovery.

The same person in Northern Europe would likely be hospitalized for longer initially, started on an injectable that only needs to be given once a month, and they leave the hospital with fewer residual symptoms. They're then followed by an ACT team with a nurse visiting to check on them and make sure they're eating and keeping housing, and ensuring that shot goes in their arm every month. They don't necessarily fully recover, but a lot of them end up being able to do some kind of schooling/employment/volunteering and they are either stable enough to keep housing without being evicted for disruption, or are shuffled into staffed group homes.

The math vs CS dept thing is concerning because at the foundations they're very similar fields. It's such a strange phenomenon that my graph theory elective in the math dept was 30 or 40% female, yet algorithms was 5% female. Definitely at my institution there were structural issues in the CS dept that didn't exist in the math dept.

Now of course, a lot of software in the US is below 20% female and we easily end up with spirals where departments end up lower than that and develop a toxic environment that pushes each new woman out. I personally ended up majoring in math instead of cs because of that process at my college.