So I'm a 29 yo who's been dipping on and off since I was 18. Recently it seems like everytime I put a pinch in I immediately get hit with a wave of depression for no reason whatsoever. It's not triggered by my environment or emotions that I can tell, it seems to be the nicotine or tobacco itself. What the hell is going on? Is dip triggering a depressive response?
It's extremely unpleasant and I'm going to quit doing it all together, especially if this continues which it has been doing for months now

can i get some explanation on how symmetry is defined in human locomotion through mathemathical expression? it seems the motor pattern times the poses in exact tandem between opposing side, creating somewhat of a cyclical kinematic structure?

it seems like the only way for a walking mechanism to walk straight and in balance...

Growing up I thought that my good grades would translate to lots of money. Now in my twenties, that was a fucking lie. What jobs actually involve mathematics?
>people on /sci/ say they can't get jobs with degrees in mathematics and the sciences
>engineers say they rarely do mathematics as they rely on simulators and most jobs are automated
I followed the "learn to code" meme and did a web development course. I could get a job in that field but I am simply not passionate about it. I thought programming would be similar to mathematics but it's quite different. I miss solving equations in school but as far as I can tell not many jobs involve that. Has technology ruined science and math careers? What are some good careers for people interested in mathematics but also getting a job. Are finance careers still a thing? As far as I can tell online apps have replaced traditional investment bankers. It's all so tiresome.
t. NEET who peaked in highschool.

How do i define the kinematic structure of the symettry in human locomotion?

like the system that allows the left and right body to move the same way in turn with the same amount of speed... while maintainign parallel to the floor

how is this expressed mathemathically? something equal to something? since it is definitely equal but not exactly in tandem but rather in opposing turns?

How do I into thermodynamics? My "uni" "professor" expects us to know thermodynamics 2 as well as thermo 1, but we condensed and "went through" both classes' workloads in one semester, instead of two. Basically I'm expected to know what I'd never been properly taught, and this is stopping me from finishing uni, since it's my last remaining subject. Even though we passed the written exam, he's flunked us during the oral examination (because we didn't suck cuck hard enough) because apparently we don't understand the subject like he does.

Long story short, I need a resource to lectures/whatever that will take me from the beginning of thermo all the way to the advanced shit. It could be conceptual only as well, because I can already solve problems and have a solid understanding of the basics, but it's not enough.

Is it true that higher levels of CO2 are decreasing the nutrient density of our food? What are the implications of this?

https://www.youtube.com/watch?v=Yl_K2Ata6XY

Why are AI programmers all so racist?