Worth noting that you can easily obtain N-Acetyl Cysteine (e.g. from Amazon), which is an effective antidote to paracetamol toxicity (and the mechanism suggests it can be taken preventatively).
Based on some experiences that transgender people I know have had, it seems like a change in sex hormones can change their d/s orientation. Also, age seems to push people more towards sexual dominance.
I would be especially curious to know about groups with high conscientiousness and openness to experience.
Possibly startup-culture people?
The part that's going to really get to Hermione is the fact that someone (original Quirrell) was killed for her sake.
I don't think there are enough people who have tried it and then gone back to being monogamous for there to be a consensus - but there are a few people who have, for example, Patri Friedman.
I would guess that these people will find monogamy more satisfying after going back to it.
Vitamin K2. Vitamin K1 is produced by plants, and K2 is produced by animals and bacteria. They have very different functions in the human body, and you need them both. Supplements and fortified food are almost always K1, unless you look for K2 specifically.
Vitamin K2 is necessary for some proteins which modulate calcium in your body. Supplementing it has been found to protect both against osteoporosis and heart/artery calcification.
I'm in a similiar situation - been studying math, but looking to get a programming job. I've been using the well-accliamed Cracking the Coding Interview book to prepare for interviews. If you're interested, I would be happy to trade advice, review, or questions.
Right now, I think the main thing I need to work on is building up my network. I've done most of djm's suggestions already.
Not suggesting anything like that at all, just a good and interesting thing to be aware of. Especially good to have on hand if you have kids, and I think it's probably good to take it with normal doses of paracetamol.