u/logperf

98.1k post karma · 52.8k comment karma · joined May 2020

logperf

This is market manipulation, it's not the same as simply buying or selling. He was spoofing, using multiple virtual identities to place fake orders in the market and drive the price down so that he could use those price swings in favor of a few real investments.

He ended up burning $1T just to take $40M into his pocket.

logperf

"Oh look it's such a cold day, who said there is a global warming" - pretty much the same logic with crime rates: "oh look there's been one stabbing in a country with 60M inhabitants". Year-round average? What kind of weird leftist concept is that?

logperf

Wild boars in Italy were on the brink of extinction in the early 20th century. Conservation efforts got them mixed with pigs and boars from other areas. Now they are overly adapted and have become a plague. I'm not aware of threats to the local ecosystem but they definitely threaten crops and invade suburbs looking for food in garbage bins, sometimes even steal people's groceries. The government is providing incentives for hunters as an attempt to control their population. There are also proposals to breed wolves in captivity and release them to the wild, as they are the only natural predators of hogs.

A lot of comments are talking about relocation of the invasive species to their natural habitats... but this is showing us that care must be taken when doing so. The invasive species may not be the same as the original and may become a new issue when reintroduced. So conservation efforts should focus on replenishing the native population from its original gene pool.

logperf

Goro looks a lot like a man in a costume, and the fight looks a lot like it's been staged, their punches pass too far away from each other's heads. The jump looks a lot like he was pulled by transparent strings, see how Goro didn't hurt him while throwing him up.

AI would have done better than this. I believe it was staged and the green lights for Johny Cage's powers were added later by editing the video.

But the Sonya fight at the end, yes, looks a lot like AI because a box appears out of nowhere next to her feet and gets thrown away. Also the Raiden one, no way a human actor can move that fast.

The others idk, maybe the video was edited, maybe they had some devices producing lights in their hands but the rest was post-processing. They look too good to have been performed live.

logperf

I believe this is an obscure reference to Michael Jackson and how he ruined his face with all those unnecessary plastic surgeries. The last picture has some obviously exaggerated features and looks a lot like him in his late years.

logperf

Of course I can google, but this is r/interestingasfuck, I would expect OP to do it before posting

logperf

Of course I can google, but this is r/interestingasfuck, I would expect OP to do it before posting

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AI generated image?

logperf

Italian here. I've seen how some foreigners are treated in front of me and I can confirm a lot of people in my country are assholes.

However, what you're describing sounds like it may happen for a variety of reasons. They may put you in a table at the edge of the room because you're going there alone while the bigger tables at the center are for large groups of people. Or they may put reserved tables in a given area. Maybe your experience will be quite different if you travel in a group or with no reservation. Honestly your experience is too generic to be called racism as it can happen for so many reasons to native italians as well.

When the salesman at a street food place yells at a gipsy telling then to go away, then turns back to me and smiles, THAT is clearly racism because they are selectively targeting people of a given race.

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When I'm falling asleep, I've noticed sometimes that my thoughts become progressively illogical before I actually start dreaming. Is dreaming just an extreme form of illogical thought when the brain is almost completely shut down?

logperf

In Italy I see people getting angry with doctors and nurses whenever some bureaucratic issue prevents them from getting what they want, or when some rule is deemed ridiculous. For instance I remember during the pandemic someone who got angry because his wife was not allowed to come with him because he was not a minor, and he was saying his wife couldn't be left alone due to health reasons.

However I've never seen it turning into violence. They are forced to calm down as soon as medical staff says "stop raising your voice or I'll have to call security". As an exception to that, I've seen in the news some anti-vaxxers beating the nurse who applied a vaccine blaming them for the kid becoming autistic.

logperf

This sorcery is nocebo effect (the opposite of placebo). Just think that something will make you feel bad and it suddenly happens.

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Can animals have human-like mental disorders?

My friend thinks his dog is psychotic as he barks ans growls at open air in the middle of the yard like someone were there. I believe he's just hearing or smelling something that we (humans) can't.

logperf

The English are considered to be native because we didn't come from anywhere else.

Sorry, that's just not true.

When the Romans arrived, I presumed the inhabitants of present-day England were of Celtic origin, but they got mixed with the Romans of course. Then right after the fall of the empire (this was the beginning of the middle age by definition) they were invaded by the Germans and got mixed with them. Then towards the end of the middle age they were invaded by the French leading to further mixture.

So the English actually come from everywhere except England!

logperf

I'm reading a nutrition book that explains how adding some carbs twice a week into your diet can stimulate leptin production, which not only calms hunger but also increases your TDEE (not BMR) and can break you out of a weight loss plateau. Works like a charm for me, I'm quite happy with the results so far.

Now I'd like to understand how it works exactly. If leptin is produced by adipose tissue when you're "fat enough", why should it be produced when you eat carbs but remain in a caloric deficit?

The only explanation my ignorant mind can find is that leptin is actually not produced when you're fat, but when fat stores are being filled up short-term. Is that it? The book also says that insulin stimulates leptin but doesn't give more details about it.

logperf

Theorem-proving AI was popular in the 1960s and '70s. They're not bad at it. They were mostly based on the A* algorithm. This is a very flexible AI algorithm that, given a set of actions and a logic to predict the effects of each action, can find a combination or sequence of actions that lead to a goal. It is very flexible because depending on what you define as "action" and how it predicts its effects, the same algorithm can be used for different applications such as navigating on a map, playing chess, robotics, etc. So, if you code all the basic math (sums, extracting common factors, simplifying fractions, etc) as "actions", give it a formula that you want to prove and a few formulas as axioms, it will find a way to infer the formula from the axioms and show the steps, effectively proving it.

It has two main limitations:

  1. Most AI algorithms are very CPU-intensive and may take a long time to execute (particularly, A* and similar algorithms have exponential complexity)

  2. In the case of math, it is based on syntactical transformations, so for the lack of "human intuition" it won't figure out if you'd get better results with different axioms, apply approximations that can be assumed safe in the domain, etc. Therefore there are many theorems that it just fails to prove because syntactical transformations alone are not enough.

What today we call "AI" is mostly LLMs (chatbots) because they have advanced so much and become so popular in the past couple of years. These are very different, it's mostly a combination of statistical models about the frequency and associations of words with neural networks. This makes them very good at style, not so good at content. So, you may get the impression that AI is not good at math, it actually is, you're just not using the right kind of AI for it. Same way, if you ask a chatbot to calculate a path from your home to a store, it will give a very bad response, but maps apps which have specific AI algorithms for it (I believe most of them use A*) will give much better results.

logperf

Trying to understand the so-called "yo-yo effect" after dieting. I'm reading "Project Nutrition" by Andrea Biasci.

It says that when you gain a lot of weight and adipocites can no longer contain all that fat, they start multiplying, but then if you lose it, they "shrink" but their number stays the same. This makes it easy to regain weight.

But it doesn't dig into the details and I'm curious about the mechanism of action behind that.

What I don't understand is that you need calories to fill those adipocites again. The fact that you have more adipocites now won't change that. So I don't see any reason to gain more weight than before if your caloric superavit is the same.

What I've googled says:

  • They give the analogy of making more bottles to contain all that oil, then the second time you fill them, the bottles are already there. I understand the analogy but this doesn't tell me why they fill faster than before with the same amount of oil per day.
  • They say more adipocites produce more leptin, causing you to eat more, so the caloric superavit is no longer the same. Well, that's not what I found on wikipedia which says leptin stimulates you to eat less, not more.

What comes to my mind:

  • Does multiplying adipocites require energy? So that the second time you gain weight you don't have to spend energy on that?
  • The book says muscle cells and adipocites compete to absorb glucose and fats from blood through GLUT4 receptors. Does a high number of adipocites outcompete muscle tissues more easily?

Any other mechanisms I haven't found or haven't thought about?

Repeat, trying to understand the mechanism of action why the same amount of calories will make you fat faster the second time (or why it is not ok to assume it is the same amount of calories).

logperf

Bad bot. Am not eurosceptic!

logperf

So why exactly is the high pressure or cryogenic liquid hydrogen storage that impractical? Why can't these technologies be miniaturized and made cost effective eventually?

When we're talking about big numbers it's always a challenge to engineers. Miniaturization won't give more capacity to tanks, it's the exact opposite, you need a big tank for more autonomy, or higher pressure. When increasing numbers that much, you need a tank with thick walls to make it resist the pressure, which makes it heavy and expensive. Then you need specialized valves to prevent them from breaking under high pressure. I'm probably still missing a lot. There might also be implications for the pipes you use to fill the tank.

And is it wrong to say someone just needs to bite the bullet and spend the fortune it will take to get that working well, and then the hydrogen economy will promptly take off?

I can't say that's wrong but I also can't say it's right. Massive investments in R&D usually give good results for overcoming technological limitations, but when dealing with physics (pressure and density), you may end up throwing a lot of money into the project to obtain just limited improvements.

Don't get me wrong, I'm not against it, I'm just keeping my expectations realistic. The EU program to provide cheap green hydrogen might be a good incentive for companies to invest in R&D. Let's wait and see.

logperf

That's something we can agree on. In my experience r/europe and r/yurop are quite ingenuous about the extreme left.

Still, the current events are not carried on by the extreme left.

Edit: okay downvoters, at least you could explained what you think is wrong.

  • Did you dislike that I said we can agree the extreme left and extreme right are almost the same?
  • Did you dislike that I said these subreddits are ingenuous about it?
  • Did you dislike that I said the current events are not carried on by the extreme left?
logperf

Speaking form a software point of view, yes, most companies are quite jealous about it. It doesn't matter if the design is simple, if it is a technology that nobody cares about, they usually worry a lot about not giving out the sources and even obfuscate the binaries so that they cannot be easily decompiled. Their concern is that a competitor could arise and develop a competing system at nearly zero cost if they already have the sources of a working product.

But hardware may be different because there is a per-unit cost in addition to development cost.