tdscanuck
tdscanuck t1_jefqbed wrote
Reply to Eli5 what exactly makes fat so delicious? by Smite76
Evolution. Fat is the most calorie dense food, so any organism that likes fat is much more likely to eat it, get more calories, and survive times of scarcity. Over time, that results in basically every creature that's capable of metabolizing fat finding it delicious.
Too much fat is bad for you but that's a *very* recent development...for essentially all of history (and still only for a small fraction of the world today) calorie deficit is far more likely to kill you than calorie excess. There hasn't been enough time for this to evolve back out.
tdscanuck t1_ja620w3 wrote
Reply to comment by Lirdon in eli5 why does metal melt and wood burn/char by cheese_grater_man69
Have to be a little careful here...lots of carbon-based organic compounds melt. Like pretty much all plastics, fats, waxes, etc.
It just happens that the main compounds in wood (lignin, cellulose) are heavily cross-linked and undergo thermal decomposition into things that burn before they reach melting temperature under normal conditions.
tdscanuck t1_j9w3v14 wrote
Reply to comment by furtherdimensions in ELI5 what is ownership? by No-Eggplant-5396
Good point. Which is why the mechanics of co-ownership agreements are so important, and so complicated, regardless of what thing they're owning. There are *so* many ways it can get screwed up and so many eventualities that might not be fully covered by any agreement.
tdscanuck t1_j9w2yt6 wrote
Reply to comment by ukAdamR in ELI5 what is ownership? by No-Eggplant-5396
Adding on for OP, the key with co-ownership is that the "legal person" involved in the ownership is a legal entity made up of *both* the co-owners. There's a contract underneath that lays out the terms of how the co-owners do things. If one co-owner tries to sell the property without the permission of the others 1) they've breached the ownership contract, and the other owners can retaliate and 2) the legal entity that owns the property (which is *all* the co-owners) hasn't agreed to sell it...one co-owner, by themselves, isn't the legal entity that owns the property so they have no right to sell it.
tdscanuck t1_j9w2cxq wrote
Reply to ELI5: [Law] What happens to music rights when music artists sell their music catalog? What about performing their songs at concerts? Future releases? by Outrageous-Door8924
It all depends on exactly what they sold and what went into the contract.
In theory they could sell any combination of rights. They might be selling the entire catalog and all the rights that come with it, or it might just be a subset. For example, "You can play and sell any of my songs you like, but I reserve the right to perform any of them live whenever I want." Or "You have full rights to everything I've written up to now, but no claim at all on anything I do in the future."
Like any contract, it's almost infinitely negotiable.
tdscanuck t1_j9v2gfj wrote
Reply to ELI5: Why do we only use 1 and 0 for binary? Could we create a trinary system introducing an extra '2'? by No-Mammoth-1638
Yes, trinary systems exist.
We use binary for computing because it’s really easy to map the state of electrical switches (on, off) to binary digits.
Going trinary, or higher, means you can’t use switches. The math all still works fine but the hardware becomes far more complex. And, since you can emulate any system with any other, and binary is far easier to build, we stick with binary.
tdscanuck t1_j6lgzkn wrote
We *don't* measure the temperature excluding humidity. We just measure the temperature. It's really easy. Temperature doesn't change with humidity.
What changes is how hot it *feels*...when the air is dry sweating works better and we feel cooler. When the air is humid sweating works badly and we feel hotter. But the actual temperature isn't changing.
tdscanuck t1_j6kugm2 wrote
Reply to comment by omicrom35 in ELI5: What does it mean when a company buys back stocks and why is it frowned upon? by lilly_kilgore
Usually the company proposes dividends and their board of directors approves it. From a purely process standpoint, most companies can turn dividends on or off at will (details depend on their exact corporate rules). In practice, investors generally expect dividends to be pretty even over long periods so companies don't like to mess with dividends...once you start doing them, or increase them, it's really hard to stop without a significant stock price hit.
tdscanuck t1_j6g83nc wrote
Reply to comment by shinysnake727 in Eli5 why we can’t see the 4d world around us by Supastash
We don't know there's no 4th spatial dimension, we just know that either we can't access it or it's rolled up really tightly.
tdscanuck t1_j6g61ep wrote
Reply to comment by TietVinh in ELI5 what statically determinate and indeterminate structures are and why such classification exists. by TietVinh
People actually build both, but you don't "improve" it from there...you have to decide whether you're building determinate or indeterminate during the design phase. It's going to be part of the design requirements and it's going to influence everything else you do. If you don't know which kind you want before you start, and why, you don't want that person designing structures.
tdscanuck t1_j6erxv5 wrote
Reply to Eli5: Why is the screen ratio 16:9 so common instead of something like 2:1 or even just 1:1? by sansgamer554
Movies.
Movie makers like having a nice wide backdrop, it gives them a lot of room and, since we mostly operate on a (nearly) horizontal plane, there's a lot more interesting things happening to the left and right than up and down.
There a number of particular wide formats, it doesn't *have* to be 16:9, but that's why we generally like wide formats.
We got stuck with 4:3 for years on computer monitors & TVs because it's *very* difficult to make a widescreen CRT tube. They want to be 1:1 for technical reasons and 4:3 was about as close as they could get to a widescreen format that would look movie-ish.
Fast forward about 80 years and the technical constraints went away...modern LCD/LED screens don't care what shape they are.
16:9 got settled on as the standard format for DVD/HD TV as a nice compromise where virtually all widescreen movie (and now TV) formats look pretty good with minimal black bars for the weird movie formats, so now essentially all displays are 16:9 for maximum compatibility.
tdscanuck t1_j6616nj wrote
Reply to comment by dmazzoni in eli5 why do most realtors only want to sell your house and not help you buy?? (from what i’ve noticed) by yeonbits
I bought and sold three houses through the pandemic, all in WA…apparently our situation here is weird because of the high house prices.
But it’s entirely possible I’ve internalized the “3%” and 50/50 thing and screwed up the math.
tdscanuck t1_j65dxgu wrote
Reply to eli5 why do most realtors only want to sell your house and not help you buy?? (from what i’ve noticed) by yeonbits
You may have a bad agent...they should want to do both.
Selling is somewhat easier (less time commitment from the agent) but if someone is selling then someone must be buying so it's in the agent's best interest to facilitate both...they make money on both sides of the transaction.
They may want to sell *more* than buy but they should never want to *only* sell.
tdscanuck t1_j65dqop wrote
Reply to comment by whomp1970 in eli5 why do most realtors only want to sell your house and not help you buy?? (from what i’ve noticed) by yeonbits
If they're *each* getting 3% (in the US) you're getting screwed. It should be 3% *total*, split 1.5% to each agent.
tdscanuck t1_j65dnx5 wrote
Reply to comment by l34rn3d in eli5 why do most realtors only want to sell your house and not help you buy?? (from what i’ve noticed) by yeonbits
That's not true. The seller pays the commission and it's split evenly between the buying and selling agent, unless there's some weird contract to the contrary. At least in the US.
tdscanuck t1_j604un3 wrote
Reply to ELI5: Foods we eat like bread, biscuits, croissants has yeast in it. Sugars are already in the body. Does yeast produce alcohol in the body? by ddr1111
Generally no, baking kills yeast. What's in there when we eat it is almost certainly dead.
Even if it weren't, there's no way for the yeast to get into our blood, the worst they can do is eat the sugars in your stomach. Which they can totally do...don't eat a lot of live yeast, for this reason.
Edit:typo
tdscanuck t1_j5xnrlw wrote
Reply to comment by alexander-prince in ELI5: What is Overfitting in machine learning and why is it bad? by alexander-prince
It really depends on the dataset and model. In general, the smallest model that meets your requirements is a good idea but that size could range wildly depending on the data format, richness, and required performance.
tdscanuck t1_j5xkuj8 wrote
It's not just for machine learning, it's a general problem with any models that try to simplify anything. Overfitting is basically when you make the model so "big" (enough values that it can adjust) that it can perfectly fit *any* training data you feed it. So your model will look *amazing* in terms of performance, but it may totally fail when you finish training and try to do something useful with it because it's too hyperspecialized to the training data.
As a trivial/over-simplified example, suppose I want a machine learning widget to recognize pictures of traffic lights so I can automate those stupid captchas (yes, I know that's not how they actually work). I get training data of 10,000 pictures of traffic lights and 10,000 pictures of non-traffic lights and use that to train the model. Except I give the model 10,000 different variables to work with (far too many). The model can "learn" to recognize each of the 10,000 pictures because it can use one variable to match each photo of a traffic light. The results on the training data will be perfect...it recognizes every one of my 10,000 traffic lights and ignores anything that isn't those. 100% success!!! But now I feed it a new picture of a traffic light...and that doesn't match any of the 10,000 I trained it on before. The model will say "not a traffic light" because it got too specific...I overfitted the model so much that it can *only* recognize the training data. It was never forced to figure out how to efficiently recognize traffic lights with a much smaller number of variables that would learn "traffic-light-ness" but still be general enough to recognize other traffic lights.
You can do the same trick in Excel with polynomial fits to data points...if you give the polynomial enough free variables it can match basically anything to a pretty high accuracy. That doesn't mean you've discovered some amazing 70th degree polynomial that magically predicts your data, you've just (grossly) overfitted the model.
tdscanuck t1_j5xjugj wrote
Reply to comment by Muroid in ELI5: Why is the kinetic energy of an object proportional to the square of the velocity? I've read many explanations online but I still don't get it. by ThrowawayHomesch
It'll all work out *as long as the frames aren't accelerating*. If you're in accelerating reference frames all bets are off.
tdscanuck t1_iyenymu wrote
Reply to ELI5 why can't you just plug in electric cars / why do you need a wall charger when it could just be built in by definetlynotaalien
You can just plug them in. The problem is that a normal wall outlet doesn't provide nearly enough power to charge a car battery in a reasonable time. You need a lot more current, which means a dedicated circuit and special wiring.
tdscanuck t1_iydi2sf wrote
Reply to comment by Wendals87 in ELI5 How is the Tether price I pay determined? by LGZee
Read the report you linked to.
Among other things: -Tether promises on that page to publish reserves daily. The last accounting report is Sept 30, 2023 -That report specifically notes two ongoing lawsuits, the outcome of which is not included in the audit results (because they’re still going) -The audit report shows $56B in cash & equivalent reserves against $67B in Tether liabilities…I.e. they’re about $11B short of actually backing their token. The balance is made from bonds & precious metals (probably fine), and outstanding loans (definitely not fine…the recoverability of those loans is unknown). Most believe that those loans are actually to their parent company, which means they’re not real at all, they’re just shell game accounting. That’s what they’re trying to determine in the lawsuits and, so far, Tether has not responded to.
Short version: their own auditor’s report says they don’t have the cash they claim to and the auditors can’t tell, and Tether isn’t saying, where the balance is actually coming from. It’s definitely not cash and it may not exist. If it did, the lawsuits would be over quickly. The fact that they aren’t tells you something.
Edit: I dig into the footnotes.., it looks like they’re double counting the gold they have to back Tether Gold tokens as precious metal reserves for Tether. Which means their precious metal reserve that’s backing Tether also really isn’t…it can back Tether Gold or Tether but not both. So the gap is closer to $11B than the audit report summary makes it seem.
tdscanuck t1_iyb8e7h wrote
Reply to ELI5 How is the Tether price I pay determined? by LGZee
It's the market.
In *theory*, Tether is supposed to maintain a value of $1 USD because the issuing company (Tether Limited) says they maintain a reserve of $1 USD for every Tether.
However...Tether Limited doesn't actually do that. They're up to their eyeballs in lawsuits right now because they don't have the reserves the claim to and they won't let anyone audit them to figure out what they do have.
tdscanuck t1_iya7q30 wrote
Reply to comment by jus1scott in ELI5 When selling an item in an auction, why set a minimum reserve amount if the bidders can’t see it. Why not just set the minimum bid at the lowest price you’d be willing to sell at? by lsarge442
Dammit...you're absolutely right. I will fix the top comment. Thank you.
tdscanuck t1_iya4mr6 wrote
Reply to ELI5: How do a bunch of lightly-electrified cells turn into consciousness? What causes the system to go from a “meat computer” to the subjective and immeasurable experience we call consciousness? by uniqueUsername_1024
I totally agree with /u/TheLuteceSibling and /u/pocketjpaul that this may be an unanswerable question.
BUT...*if* conciousness is an emergent property of complex systems (which is one of the competing theories but we may not be able to confirm), then you go into the general space of emergent properties, which is that you get properties of systems that are *more* than the sum of their parts because the "thing" is the interactions, not the parts.
A bunch of lightly-electrified cells *aren't* conscious. Dopamine isn't happy. But the interaction of a whole bunch of dopamine (and other stuff) mediated lightly-electrified cells results in a network/interactions that are conscious. It's the relationship between the things, not the things themselves, that defines the phenomenon.
It's roughly like pointing at a wave and saying "how do a bunch of water molecules make a wave?". The water molecules have no idea that they're part of a wave and "the wave", which is a perfectly visible measurable predictable thing, is made up of different water molecules from moment to moment but it's still "one wave". It's the interaction/relationship between water molecules that defines the wave, not the molecules themselves.
tdscanuck t1_jefszc0 wrote
Reply to comment by H4R81N63R in ELI5: If universities all teach the same things, how come some universities are perceived to be better than others? by Ok-Journalist-8751
They also don't all teach the same things the same way.
Even if you have 100% curriculum overlap, that does not mean you're doing the same projects, same assignments, same lecture setup, same balance of lecture/homework, same prof/TA access, etc.