linucs

Any topic, just explain what it is please

I know evolution is governed by chance and it is random but does it make sense to "ruin" sleep if there's light? I mean normally, outside, you never have pure darkness, there are the moon and stars even at night. In certain zones of the Earth we also have long periods of no sunshine and long periods of only sunshine.

I don't know if my question is clear enough but I hope so.

Bonus question: are animals subject to the same contribution of light or lack of it to the quality of sleep?

The birth (or death) of a relative, the release of a new program, game, series, movie, the date you were dreaming about, could be anything

What I mean is: some boolean flags are perfect for the real world phenomenon they are representing e.g. is_light_on makes you understand perfectly that when it is true the light is on and when it is false the light is off.

There are other cases in which if you didn't write the code and you don't read any additional documentation, everything is not clear just by looking at the variable name e.g. is_person_standing, when true it's clear what that means but when false, is the person sitting? Lying? Kneeling?

I'm obviously not talking about cases in which there are more states, boolean would of course not be a good solution in those cases. I'm talking about programs in which there are only two states but it's not obvious, without external knowledge, which ones they are.

This is something I always wondered because some people have a bunch of theories about whether your head should face north or south or whatever, because of the earth magnetic field. Is there any science in this or just "superstition"?

Also, would it be better to have the head towards a window or away from a window, even if closed (e.g. in winter)?

I'm basically asking whether there exist "recommendations" on how to structure a bedroom backed by science.

After reading the abstract of the paper mentioned here I started wondering, why did human groups migrate away from southerner (warmer) places towards the north which is far colder and has less possibilities to grow crops and wild animals to hunt?

Was the population density too high?

And after they migrated, what did they mostly survive on? Were they hunters-gatherers? Did they cultivate? Was it not more difficult to survive in colder climates?

I found this post on Hacker News https://news.ycombinator.com/item?id=38421110 and in it a comment that sparked my interest: "Only tangentially related but: I have a blue light filter (Plasma night color) always on on my laptop because I feel like, in combination with brightness reduction, I get less eye strain. I've always wondered if there exist a color scheme for desktop theme or IDE / neovim theme or whatever that is thought with night color in mind, i.e. it's made specifically to be looked at with blue light filter reduction, so that all choices of color work, because for example I use solarized light in neovim but when doing diff I need to turn night color off because otherwise I can't read selected text."

Does anyone know if such a thing exist? I too have blue light filter on my PC on all the time so everything is yellow/red tinted depending on the time of the day but sometimes I have difficulties reading some text in certain colours because of it.

I'm sorry if this isn't the right community to ask this.

And if so, how much? Less, same or more than if it was actually charging something?

I'm in the EU if that changes something.