Generally speaking, Library Genesis, Anna’s Archive and Sci-Hub are your friends :) Otherwise you can try to email the authors. They will probably provide you with a copy.

It is a triangle. The abstraction of lines in non-Euclidean geometry are geodesics and just like three lines form a triangle, so do the geodesics. If you walked along the earth’s surface from the equator to the North Pole and back, taking 90 degrees angles every time, you will have felt that you made a triangle by walking straight in three directions.

The reason the angle sum can be more than 180 degrees is that the sphere has a positive curvature. If you want one with negative curvature and less than 180 degrees angle sum, try to make one on the side of the hole on a torus (look up its curvature if my explanation was lacking).

EDIT: Picture for reference:

The answer is obvious. Depending on the curvature of the object the triangles have higher or lower than 180 degrees angle sums. Flat space just happens to have 0 curvature.

I am pretty certain our brains evolved to filter out friendly/known voices some tens of thousands of years (or more) ago. I feel tired sometimes before and after coffee, and often less so on coffee breaks because the real issue with coffee is that the caffeine can definitely disrupt sleep.

I understand you need consistency to not be engaged by sounds. I hope you understand that other people have other limitations, hence, again, it is your first statement I disagree with.

I see you repeating the claim that it makes sleeping more difficult, but I do think those that listen to sounds, be it ocean waves or someone talking, have the experience that it makes it easier for them to fall asleep.

Sure, there can be problems with sleep quality for numerous reasons. However, making a blanket statement that this disrupts the sleep, especially of those that have positve experience with it, is going to need some factual sources (that I do not think exists).

According to what I have read, it is fine if it is not too stimulating.

EDIT: Also, it is easy to take a break from coffee: It only requires not drinking a few cups. Either way it does not really prevent fatigue, at most delaying it.

How is it bad sleep hygiene to fall asleep to noise? If it is adequately non-engaging, it is pretty much the same as other white noise. Furthermore, it really depends on each person what makes them relax.

To paraphrase an actual sleep scientist (and not just talk out of my ass like most people do about health):

It is easy to see know if you are getting enough sleep. If you feel tired during the day, you need more sleep.

Magic beans taste soo good.

I can tolerate you being wrong.

The most optimistic explanation I have been able to arrive at is that they are less intimidating for fragile male egos. However, I concur wholeheartedly: Extremely creepy.

Also, Americans are usually more prude, especially when it comes to the female body, than what is healthy (I understand that you would not want to make an attempt at social change starting in the workplace though).

Unity of the left is a double edged sword. Sure it means increased bargaining power for change. Also, it usually deteriorates into a hostage situation where the most centrist “left” party in the coalition says they will cooperate with the fascists, if the other left parties do not reduce their call for change to just symbolic issues.

An age of rising fascism…

I would just like to digress by pointing out that I found your discussion interesting and that .world defederating .ml would kill potential future ones like it. It also seems to me that rejecting ML impulses, say by disassociating the .ml and .world users, would not contribute to organising society in a way that would allow for the revolution you speak of.

MLs do not go away by ignoring them. One of their main tenets, which they are to be admired for, is precisely their obstinancy to making themselves heard. If I understood you correctly as a proponent of a solution that is yet to be evolved, why reject the input of MLs? I am personally curious about learning more about anarchism, that is if the theory is not so weak it would but all be destroyed by the breath of a ML.

I had to do a double take because this sentiment is prevalent throughout lemmy.world and other instances.

In much of Europe the left have been victims of former success. Many of the (former) leftist political parties and their constituents have foregone leftist policies because said policies gave them the social mobility to move into a higher strata of society.

In effect it is successful class war waged by the capitalist class, who have dismantled their greatest political opposition and employed a tactic of divide and conquer for the lump sum of petty cash.

Note, I do not say that having a fair and egalitarian society isn’t a part of socialist ideology, but focusing on cultural symbolics instead of improving material conditions is just bourgeoisie propaganda.

Identity politics surely is to blame for the rise of fascism. Just like the last time in the years 1915-1945.

You are almost quoting the fascist playbook line of “look what you made me do”.

Look! We gutted the public system. Clearly the privatized alternative must be the solution. We support privatization btw, so you need to vote for us!

Koselig, the Norwegian word for cozy that is also a reflexive verb.

More worried about this triggering an ice age and subsequent global failure of what crops remain.

Conversely, if you want less cheap comments like this one you should not.