Recent comments in /f/explainlikeimfive

ZylonBane t1_iyaddzc wrote

>When you make changes to the world, the seed is changed to make sure the change you made appears the next time.

Okay stop, this is complete ignorant nonsense. That's not how seeds work. You're proposing some sort of mechanism that could losslessly compress several hundred K of arbitrary data into a single number. Not only is that not how Minecraft works, it's literally impossible.

How Minecraft actually works is that a chunk is generated once when it's initially discovered, then written to disk. Any subsequent changes to that block are written to the save file.

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The_RealKeyserSoze t1_iyadbmc wrote

>”They also do copyediting, and gatekeeping to keep the cranks out. I agree that there is a lot of profiteering involved, but if the journals were pointless then everyone would just publish on sites like arxiv.”

Most of that is done by unpaid peer reviewers. The publishing companies that own journals don’t really add any value they are true middlemen.

Your other points are true, open access journals deserve more attention and prestige, hopefully opinions change going forward, if legislation doesn’t do it first.

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onajurni t1_iyacvl5 wrote

TLDR:

The bidding starts low to get bidders jumping in with great hopes of getting something for less than its true value, the reason they came to the auction. A lot of bidding encourages bidders to think the item may be worth more based on the behavior of other bidders. Bidders know there is a reserve, but they hope it is set low and that the seller just wants to get this thing sold, even below market value. But the seller wants to have a reserve price to protect them in case the bidding does not go high enough.

But starting the bidding high - at the seller's reserve price - signals that this bargain is not going to happen. Bidders figure that the winner will probably end up paying full market price and bidding may even go above that. So why even bid when they could get more selection for the same price at a store or a dealer.

Yes, it seems contradictory to encourage bidders into thinking they will win for less than true value, while assuring the seller that it won't sell for less than close to true value. But that's what auctions are all about. Auctions are about the game and the emotion. The psychology is very different from simple fixed-price selling.


More detailed explanation:

My experience with many auctions of high-dollar and low-dollar items: Auction buying is more emotional than rational. Auction buying is a game. Many people behave differently about their decisions than they do when buying an item at a set price off the shelf, with no one else competing for that one item.

Bidding needs to start very low to get people to make the first bid and pull in more early bids, to get the bids flowing and the energy going. Even if those bidders know they will be bidding higher to win.

Brisk bidding encourages people to think this item may be worth more based on the behavior of the other bidders. It can also trigger the competitive spirit of some buyers who want to win.

But the seller will be anxious about selling too far below market value, so the auctioneer allows the seller to set a reserve price below which the seller doesn't have to sell. (If higher bids aren't coming in, though, the seller may be asked if they are willing to let it go for below reserve.)

This example is how not having a reserve is likely to work: A car at a public auction has a probable market value of $10,000. The prospective bidders know that. The seller doesn't want to sell it for less than $9,000. If the auctioneer opens bidding at $9,000, there is a chance that very few bid and it doesn't go much higher. Or maybe no one bids. Because they are all sitting there thinking "Well heck I could just go down to the used car dealer and have more selection for the same thing at very near the same price."

Starting the bidding at close to market value is not why the buyers came to the auction. They came for 'bargains', even if that's not what they end up buying in the end.

Conversely, if the auctioneer opens the bidding at $5,000 (half of the reserve) lots of people jump in! Bidders tell themselves maybe no one else will bid it up very much, I'll get a $10,000 car for much less! They know there is a reserve but don't know what it is and think that maybe this seller will let it go for a low amount, just to have it sold.

Then auction psychology kicks in, and each subsequent bidder is thinking "Yes I'd give $5,200 for that" ... "Yes I'd give $7,000 for that" ... and so forth. The bids keep coming.

As the upward bidding continues to play out, the competitive spirit will take over in some people. Some others will revise their perceived value upward based on how they see others bidding. This is the crux of auctions.

But it doesn't happen if the bidding opens so high that there isn't room for much bidding before the market value of the item is reached. So the auctioneer allows the seller to set a reserve price, thus allowing the opening bid to be quite low so that lots of people will bid, without risking a sale at a super-low price.

A few bidders may even convince themselves that this car is worth having at possibly more than $10,000. Eventually the car that started bidding at $5,000 against a market value of $10,000 may finish up at $12,000, just from this psychology. That doesn't happen every time, of course, but it happens enough that people keep selling things at auction.

This is as true with online auctions as it is at in-person auctions.

Of course there are plenty of people for whom the auction dynamic makes no sense at all. They don't get emotionally caught up in it as others do. Low opening bids, reserves and bidding generally doesn't compute for them. They are not auction buyers! lol And that's ok, there are plenty of other ways to buy stuff. Auctions are for people who like auctions.

Auctions are a very different creature from ordinary selling at a fixed price. Something about human nature has people behaving very differently when bidding/buying at auctions. Auctions are fascinating to watch from a human behavior standpoint.

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The_RealKeyserSoze t1_iyacves wrote

Because for profit publishers want more profits.

Some countries are now passing laws to make publicly funded research free, but for now if open access is not available use sci-hub, unpaywall, r/scholar or even email the author directly (many will respond with a pdf of their work). Your taxes have already paid for the research in many cases and the fees do not go to the researchers or the peer reviewers, they just go to publishing companies like Elsevier who add essentially no value.

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ethnicbonsai t1_iyacpt2 wrote

I remember someone (maybe a park ranger?) posted here on Reddit not too long ago that the problem with "bear proof" containers is that it's almost impossible to make something hard enough to get into that a bear can't figure it out, but easy enough to get into that most people can get into.

I don't remember the exact quote, but the sentiment has stuck with me.

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camkatastrophe t1_iyabumd wrote

So sound is caused by something vibrating. Any sound that's coming from the boosters vibrating air molecules outside which vibrate the windows which vibrate the air inside would fade out to nothing as air outside got thinner. But any sound coming from the boosters vibrating the vessel itself would still be heard even as the vessel got completely out of the atmosphere.

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The_RealKeyserSoze t1_iyabks2 wrote

They actually can protect your hearing, but only in certain situations, and not in others.

They work by producing sound waves that “cancel out” or destructively interfere with the sound from outside. This is very good for steady background noises like a lawnmower or airplane. But really bad for changing or sudden noises like a gunshot loud concert. In the later scenarios the sound generated to cancel out the outside noise is on a slight delay so it might be too late and it might not be able to fully cancel the outside sound.

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soylamulatta t1_iyabgye wrote

You didn't outright say it but a lot of people would read your comment as having only two options. The first is treating an animal cruelly and then eating them and the second is giving the animal a better life and then eating them. And we have to keep in mind that it doesn't matter what farm the animal grew up on they are all likely going to a similar slaughterhouse. Although people like eating meat a lot of them don't realize what truly goes on in the animal agricultural industry. And they don't realize there's actually a third option - not eating any animal products at all. I think if more people knew how animal agriculture works and realized that abstaining from animal products is an option then more people would not eat meat at all.

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dkf295 t1_iyaay5z wrote

But imagine you're a bear and can just bust out a window and go in and grab the pie. And now not only is your pie eaten, but you have a bear in your house.

Not only do you need to lock the pie up, you need to hang it from a rope from a tree such that a bear cannot access it, sufficiently far from the campsite that the bear is not presenting a danger to you/others. Keep in mind that bears can climb trees.

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lungflook t1_iyaaq12 wrote

The best answer I've seen to this is that it doesn't. Consciousness is a self-reported quality, which is to say that there's no way to tell if something is conscious without asking it. Furthermore, many things can answer 'yes, I'm conscious' even if our intuition says they aren't actually conscious (computer chatbots, choose-your-own-adventure books, post-it notes with 'Yes, I'm conscious' printed on them), so there's no way to tell for sure if something is conscious even if you ask it. The "Philosophical Zombies" thought experiment tells us that it's perfectly plausible to imagine a society where nobody is conscious but nothing is different.

What do you call a quality that can't be measured, detected, or tested for, and the absence of which causes no difference whatsoever? You call it 'imaginary'.

Consciousness is just an illusion born from our brain's predictive and empathetic abilities to simplify concepts of agency.

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Sing_larity t1_iyaaoe7 wrote

There were 6 children who called 911 during this. There was sound of gunfire.

And there is also the fact that people who enter a school with automatic weapons (virtually) never do so with intent of taking hostages.

​

So no. Categorically. On every single level wrong. Stop boot licking these incompetent coward cops.

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