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It's intuitive to me that the option "c) 2 ≤ i ≤ 12" is the only acceptable answer, since it is the only range you can tell immediately at a glance what numbers are included: 2, ..., 12. There shouldn't be a 1 or a 13 in the notation if there won't be a 1 or a 13 in the sequence it's describing -- it's just bad design.

If you select the option "c) 2 ≤ i ≤ 12", then Dijkstra's subsequent argument for zero-indexing becomes an argument for one-indexing, because a sequence of length N yields the range 1 <= i <= N when subscripting with 1, but 0 <= i <= N-1 when starting at 0. The latter is uglier than the former.

In the theory of depression as an attractor state in a dynamical system[1], exercise would be one of many small cures for depression. To cure depression, one would likely have to combine several small cures, none of which would work on their own. For example: diet, exercise, amount of sleep, timing of sleep, pharmaceuticals, behavioural activation, cognitive distortions, social life, life circumstances, as well as any physical health issues which could be contributing to depression.

I no longer have depression, and it was a combination of small factors which did it for me.

1: https://astralcodexten.substack.com/p/ontology-of-psychiatri...

I heard a story from an Uber driver about a drunk woman he gave a ride to who intended to Uber like 3 blocks, but who ended up Ubering over an hour to the wrong city before she realised her mistake.

I tried like 8 antidepressants and never found one that helped me. I also tried psychedelics and they didn't help me, though the dose probably wasn't high enough.

What helped was intensive daily group therapy and behavioural modifications, as well as becoming more social.

Depression has many causes. Good luck finding yours.

Yes, companies are profit-driven always. Not customer-satisfaction driven, unless that's what will bring them the most profit (especially true for newer, smaller companies).

This makes me wonder if there is some structure similar to a corporation which would maximise something besides profit, without either being out-competed by a corporation or turning into one.

Just make sure "selling" of shares can be automatic, because nobody wants to go back to a post they already read just to sell their shares or whatever.

This can partly be self-selection. I knew someone who chose to work at Huawei because they were learning Chinese and considered moving to China. Someone like that is a lot more likely to want to work for Huawei than someone who intends to stay right where they are and learn no Chinese.