Recent comments in /f/explainlikeimfive

lil_kreen t1_jacoima wrote

For the same reason that replacing the engine in a car does not make the car larger. Some games can't do binary patching because of the nature of their randomly packed data files makes the entire pack change. So they have to replace the entire data store instead of just inserting a new version of a specific file.

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amor__fati___ t1_jacnes4 wrote

Not correct. If you look at how escalators work (eg 3D animations), the step height is a variable that can be completely varied through the length of the escalator. So it can start flat, go up a flight, go flat again, go up again etc very easily and still be the same escalator. It works so simply it is amazing.

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Deep_Sky478 t1_jacnd09 wrote

Dental insurance isn't insurance. Think about your car insurance. It has a deductible, say $1000, and after that you don't have to pay anything to get the rest of your car covered if you have an accident. The maximum you pay is $1000. Health insurance is the same. Dental "insurance" is backwards. It usually covers UP TO $1000-1500. So if you need something simple done you don't pay anything. If you need a $40k set of implant dentures you're on your own. Dental insurance is quite literally the opposite of insurance.

The rate of coverage also used to be higher. Crowns on average now are $1200ish, they used to be $700 a decade or two ago, but insurance hasn't budged.

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manofredgables t1_jacn468 wrote

>When this electromagnet is charged, it is magnetic, and when you attach an iron bar across the poles of this electromagnet, it will not lose its energy.

Yes it will. The magnetic field generated by the electric current will collapse, but to whatever extent the iron bar was magnetized there will be some remaining. It can no longer be considered energy, however, it's just a magnet.

>The iron bar is shown by fedora guy (another YouTuber idk what his handle is) to last at least 2 years,

Sure. Permanent magnets are just that, permanent.

>and when an LED is connected across both poles, when the iron bar is pulled off, it both loses its magnetic charge and lights up the LED momentarily.

This is no mystery. That is the basic principle of a generator. Apply a changing magnetic field to a conductor, and electrical current is produced. Since you are removing a permanent magnet from an iron core, you are suddenly lowering the magnetic field from the conductor's vicinity.

If it loses any magnetism(it won't lose all of it), it's due to hysteresis loss. This is to be expected with soft iron which easily gets both magnetized and demagnetized. It's a real headache in transformers.

>There is a discharge of magnetic energy. The energy goes somewhere.

No, there is not. There is a conversion from the kinetic energy(removing the iron bar), into magnetic energy(suddenly changing the flux), into electrical energy(as the field has nothing to sustain it, it is "absorbed" into the conductors), and finally a sheer inefficient loss of potential energy as the fragile magnetizing of the iron bar goes down. That is lost as minor heat in the iron bar.

Nothing remotely interesting has happened in this sequence. Take that horseshoe transformer thing and attach a proper neodymium magnet instead of the iron bar and you'll see quite a bit more power when it's removed.

Or better yet, put the magnet on a rotating thing so that you repeatedly spin it past the horseshoe! Oh wait... That's a normal generator.

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Drizzt893 t1_jacmozq wrote

If you watch interviews with people that spent time with hunter gatherer tribes that still exist today, you'll see that they don't really have stress like we do. They are just happy people. They can't imagine why anyone would ever hurt themselves or unalive themselves. The reason we're all stressed is that we were not designed to worry about modern day problems.

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Tomi97_origin t1_jacmhqv wrote

There are multiple ways of how to make updates.

One is to just download a list of changes and apply them locally on the existing files, but this can fail if someone tinkered with them.

Second is to just download the whole file and replace the already existing one. This takes more time and data, but it guarantees success.

In your example they choose second method. You download 80GB update and that will replace 80GB of your game.

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nmxt t1_jaclx2i wrote

We are bad at dealing with the chronic stress of working/commuting every day, having not enough sleep every day, seeing scary news every day etc. We are good at dealing with the acute stress of dangerous situations that last for minutes, not weeks, months and years.

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A_Meal_of_Pain t1_jaclt8d wrote

Look at animals in captivity in general. Even when all of their needs are taken with, many of them cannot deal with the stress of unusual environments.

Humans are not bad at dealing with stress. Humans create these scenarios that actually lead to us having a lot more stresses than most other animals come up and for the most part we deal with those scenarios fairly well. We are actually super adapted to dealing with stress compared to most organisms.

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ScienceIsSexy420 t1_jackcdp wrote

As per my understanding, it is continuously harvesting those free electrons that is the limit of our ability and the focus of the current Research into the topic. Currently no, the materials that we use to harvest the energy generated do not have the lifespan to be of significant use. But the point is that this is a goal worth pursuing further

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ScienceIsSexy420 t1_jack1ov wrote

Photosynthesis does indeed generate free electrons, these electrons are used to power redox reactions which are used to synthesize starches. This is indeed an area of ongoing research, one of the professors at the institution I just graduated from was focusing his research on this very topic. Both plants and animals generate free electrons during metabolism, and use these electrons to do things. Harvesting the electrons is quite feasible

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tezoatlipoca t1_jack13h wrote

Not a graphic designer but am friends with a few.

So the first part is you have to sit with the client and figure out whats wrong with their existing branding. Is it stodgy, old fashioned, out dated? If we revise it, are we going to alienate or lose what slice of our long-time customer demographic? what about the old branding can we retain in the revamp, and what can we toss? How many people relate to the "King", how many people find him super creepy. So... all of those "requirements" type meeting take maybe a few hundred hours - at $300/hr or more + expenses.

Then the designers go away and sketch up half a dozen new logos/brandings. Present to customer. Mind you, each one takes several days to prepare, its more than just the logo. Its how that logo appears on the letterhead, the website, the email footers, the actual bricks and mortar signage, the weekly newspring circular -it has to look good and convey the "message" of the new branding in ALL circumstances.

So each proposed new branding could take days or weeks to prepare. You make two dozen and present half a dozen to the customer. They hate every one. Back to the drawing board. And these are good designers who make $200+/hr - or at least that's what you charge the client for.

Go back and forth a few times, you've narrowed it down to 1-2 contenders. Now the focus groups. How does this new logo make you feel vs. the old one? Customer engagement research takes time and money.

So just the ideation here can run you many hundreds of thousands if not millions of dollars and you haven't actually changed anything. You've finally picked the new look and feel of your brand. Now you go to actually make the change.

Sure, telling whoever prints your napkins and takeout bags to just ue the new logo is easy, and you'll consume the stock of old ones in about a week. The new logo doesn't cost any extra to print on a bag or napkin or paper cup than the old one. But now all of your locations have to change. The color scheme of all your interiors. Each location has a 40' lite up sign that needs to change - at $50k per and you have 4,000 locations nationwide. Who eats that? the franchisee or the chain? The franchisees fight back. Um no, Im not eating $200k to change my sign and redo my interior, the staff uniforms, the stupid forms that I use to schedule a bunch of high school kids just because you decided the Burger in Burger King needed to be revamped.

Suddenly you're looking at a tens of millions of dollars change. Seems less attractive. Maybe if we get Spike Jonze to do a Super Bowl commercial for us...

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