If a person is going to continue being threat to the lives/wellbeing of others, they should be kept away from others.

If you lack the resources to keep them in an institution indefinitely, then killing them is the way you keep them away from others.

For example, a person who isnt in their right mind committing homicide because the voices in their head tell them to should be institutionalized by the government.

Whereas a billionaire pedophile should probably just be killed because they can bribe their way out of any institution/law so murder is unfortunately more likely to prevent future harm than attempting to institutionalize them

On the spaceflight note, it’s rather sad that the Soviets harassed and imprisoned Yuri Kondratyuk since his work was vital in the moon landing and orbital mechanics in general.

If his work in space flight was supported and not repeatedly crushed by authorities, the USSR might’ve landed on the moon first. Instead, he was imprisoned by the NVKD for some of his engineering designs (for “sabotage” of not using nails, which is a dumb thing on its own).

And eventually, he gave all his aerospace notes to a friend to smuggle them out of the country because he feared the govt would accuse him of treason like they had Sergei Pavlovich Korolev (the guy who made Sputnik 1).

The Soviets could have won the space race, if it weren’t for the “authoritarianism” you’re trying to make light of

I’m an engineering student researcher with a CS minor and ADHD; this kind of research is what I do with my freetime lol.

To be fair this is kind of a shared hobby project/topic between me and my friend (who is a biophysics major now in med school).

Anyway, point is that you don’t need to have a real “purpose” in order to be curious. I work in a robotics/medical lab at my university and my friends is trying to be a surgeon, yet we’re constantly in debates about astro and quantum physics to the point we’ve gotten career physicists to weigh in on our arguments.

No relevance to our majors or our work, but super fucking interesting and full of gaps where there are more theories than facts. Plenty of room for new perspectives.

Normalize doing research for fun!

Edit: changed “engineer” to “engineering student researcher” because a certain person thought I was purposefully misrepresenting the fact I was a student (despite referencing the fact I’m in school in my other comments).

Jsyk in America only “Professional Engineer” is a protected title requiring a certification. You can work as an engineer and have the title of engineer without getting a degree.

I knew several civil engineers in my hometown who were called engineers without having a degree. I think one of them did eventually get his PE certification too after working under a certified PE long enough and taking the tests. (Infrastructure needs a PE sign off before getting built in my state)

In other fields like software engineering you’ll find a lot more people with the title of “engineer” and no certification or degree.

Anyway, point is that I’m sorry if I mislead anyone. I thought it was obvious I’m in school; in the future I’ll try to avoid calling myself an engineer without a qualifier mentioning I’m a student. I think this is the only comment I’ve needed to update for that, hopefully it will stay that way.

SNNs more closely resemble the function of biological neurons and are perfect for temporally changing inputs. I decided to teach myself rust at the same time I learned about these so I built one from scratch trying to mimic the results of this paper (or rather a follow up paper in which they change the inhibition pattern leading to behavior similar to a self organizing map; I can’t find the link to said paper right now…).

After building that net I had some ideas about how to improve symbol recognition. This lead me down a massive rabbit hole about how vision is processed in the brain and eventually spiraled out to the function and structure of the hippocampus and now back to the neocortex where I’m currently focusing now on mimicking the behavior and structure of cortical minicolumns.

The main benefit of SNNs over ANNs is also a detriment: the neurons are meant to run in parallel. This means it’s blazing fast if you have neuromorphic hardware, but it’s incredibly slow and computationally intense if you try to simulate it on a typical machine with von Neumann architecture.

I actually came across this for the first time when I was doing research into the visual pathway for the purpose of trying to structure a spiking neural net more closely to human visual processing.

The Wikipedia page mentions cephalopod eyes specifically when talking about the inverted retina of vertebrates.

The vertebrate retina is inverted in the sense that the light-sensing cells are in the back of the retina, so that light has to pass through layers of neurons and capillaries before it reaches the photosensitive sections of the rods and cones.[5] The ganglion cells, whose axons form the optic nerve, are at the front of the retina; therefore, the optic nerve must cross through the retina en route to the brain. No photoreceptors are in this region, giving rise to the blind spot.[6] In contrast, in the cephalopod retina, the photoreceptors are in front, with processing neurons and capillaries behind them. Because of this, cephalopods do not have a blind spot.

The Wikipedia page goes on to explain that our inverted retinas could be the result of evolution trying to protect color receptors by limiting their light intake, as it does appear that our glial cells do facilitate concentrating light.

However, the “positive” effects of the glial cells coming before the receptors could almost certainly be implemented in a non-inverted retina. So that’s the evolutionary duct tape I was mentioning.

It would be difficult to flip the retina back around (in fact since it originates as part of the brain we’d kind of have to grow completely different eyes), so that’s not an option for evolution.

However, slight changes to the glial cells and vasculature of the eyes is definitely more possible. So those mutations happen and evolution optimizes them as best it can.

Evolution did well to optimize a poorly structured organ but it’s still a poorly structured organ.

Bro myopia is the least stupid part of our eye design problems. Our retinas are built entirely backwards for no other reason besides evolution making a mistake and then duct taping over it too much to fix it later.

If your retina was the right way around (like cephalopod eyes) you would have:

• No blind spots
• Higher fidelity vision even with the same number of receptors since the nerves and blood vessels wouldn’t interfere like they do now
• much lower likelihood of retinal detachment since you could attach it for real in the first place
• possibility for better brightness/darkness resolution since blood supply could be greater without affecting light passage
• possibility for better resolution because ganglion nerves can be packed more densely without affecting light passage
• The ability to regenerate cones and rods because you could, again, ACTUALLY HAVE SUPPORT CELLS WITHOUT BLOCKING LIGHT TO THE RETINA

Our eyes are built in the stupidest way possible.

Another fun fact: retinol is regenerated by your liver. Not your eyes, not some part of your brain, not some organ near your head like your thalamus which could probably get the job done if it tried, your fucking liver. Your eyes taking a while to adjust to the dark has basically nothing to do with your eyes; it’s because of the delay in adjustment by your fucking liver to produce more retinal, dump it into your vascular system and wait for it to hopefully reach your eyes. Why are we built like this?!

Edit: A few comments asked for sources on the relation between dark adaptation and liver vitamin A. So I went looking for sources. It was honestly somewhat difficult to find information, but I was able to find two different case studies showing that night blindness in patients with damaged livers. Specifically these individuals had liver damage that affected their serum Vitamin A levels. And after raising their vitamin A levels, their symptoms improved.

This study details a patient with normal day vision and no other ocular problems besides being unable to see at night.

The patient had a medical history of stage 4 non-alcoholic liver cirrhosis, which led to a malabsorption of vitamin A, as confirmed by the very low vitamin A level in the serum analysis… …Subjective improvement in symptoms, along with better performance on visual field, were noted after initiating oral vitamin A supplementation for 6 months.

This study details a patient with night blindness caused by low levels of vitamin A presumably due to Hepatitis C.

Case description: This case describes a 64-year-old female patient with symptomatic VAD, likely secondary to liver cirrhosis in the setting of Hepatitis C. The patient presented with night blindness and blurry vision. She was successfully managed with direct replacement of Vita-min A.

These studies do show that dark adaptation is dependent on vitamin A produced by the liver, but I’ll be the first to admit it’s not exactly conclusive evidence of my initial claim that the liver must respond to dark conditions increasing retinol concentration in the blood in order for rod cells to function properly in low light conditions. That is a possible explanation for these case studies but not necessarily the only one, so take my last fun fact with a grain of salt.