>IRS is pretty smart and will look at water consumption rates

You run the machines with no load, and consume water, no?

Relevant XKCD: https://xkcd.com/1053/

Other people have posted great answers. The following doesn't really contribute much that's new to the discussion, but since I wrote it I'll paste it here - consider it a way of paraphrasing previous responses.

The bisection method is simple enough to try and eli5:

Consider the square root (sqrt) of 2. Find two test values that will "bracket" the root. 1^2 = 1 (1 is too low), 2^2 = 4 (2 is too high).

So, cut the size of this interval in half (hence the "bisection" thing). If 1.5 is still too big (it is), we throw out 2 and the new interval of interest is between 1 and 1.5 (if it were too small we'd throw out 1 and the new interval would be between 1.5 and 2). 1 is too small, 1.5 is too big. Okay.

So now we're working with the interval between 1 and 1.5, and have tested both endpoints. So we try the midpoint of that interval which is 1.25. That's too small; there's now no need to bother checking anything between 1 and 1.25, so toss out 1. Now we're working with numbers between 1.25 and 1.5.

Basically we keep checking intervals that are each half the length of the previous one, where we know one endpoint is too big and the other one is too small.

1. Evaluate at the midpoint of an interval.
2. Toss out the endpoint that matches the "too big" or "too small" nature of the result of step 1.
3. Create a new interval accordingly and repeat.

There are faster methods than this, but they are a bit harder to eli5.

I think you are conflating "diplomat" and "Ambassador" a bit, but in any case your second paragraph is misleading.

Many Ambassadors are political appointees, not career diplomats, who have no or very limited prior experience with the ministry of foreign affairs, and may have no prior government experience at all.

And many diplomats just finished their brief training/orientation before getting sent to a foreign country as an accredited diplomat.

They do get special passwords and special passports.

I don't know about mattress stores, but laundromats are mostly cash businesses with no receipts. So you could open a laundromat, do $1500 in actual business, say you did $5000 in business, and launder $3500, and it's not simple to disprove.

As others have said it’s the Lake Effect for buffalo specifically.

As for the larger phenomenon, you’re likely talking about a polar vortex

Polar vortices are always there, they are just usually over the poles.

The cold polar air basically rides the jet stream, which carries it southeast.

As for the actual storms, well, this feeling of “last winter was such a mild winter! This one is so bad!”

You could definitely argue it’s at least in part due to climate change. As the earth warms, more arctic and Antarctic ice melts, changes currents and dumps more fresh water in the ocean, and most importantly evaporates more water into the atmosphere.

This is the direct cause of why more intense summer storms (hurricanes, monsoons etc) will happen, but also — counterintuitively — this is also why more powerful winter storms happen as well.

Edit: forgot to mention, warmer air means the jet stream is actually weaker, which allows the polar vortex to push further south and create that “pocket” we saw over the last two weeks, where the cold air kind of slices the US down the middle, with the east coast getting the brunt of that ultra cold arctic air. (Northwest will receive some of it but , I’ll try to find a pic, the current gets shoved pretty far east fairly quickly. Montana was in the negatives, for example, but utah was only a few degrees colder than normal)

Couldn’t find a pic but if you scroll to “Cold Wave” on thiswiki page it shows a great time lapse.

Although partial sums of Taylor series use basic arithmetic operations so one could post an answer that calculates partial sums of Taylor series. We could then compare that with the average method described by other answers.

Laundromats aren't actually that good anymore - the IRS is pretty smart and will look at water consumption rates to determine if you are claiming more revenue than your expenses would dictate.

The mob figured out the best businesses for money laundering a long time ago - strip clubs and casinos.

I can see how that would read like a snarky belittling response. It was not my intention.

Is the expectation that after 15-20 years we just junk the rest of the car? There's cars on the road now that are way older and emissions aren't great but otherwise run fine. The path to sustainability isn't just power type but not having to remanufacture cars over and over and try to make the existing ones upgradeable. Cars take a lot of resources to make that also has impact. Especially since the body usually holds up it's the engine that wears out on ICE. Can't imagine ICE beating out pure electric.

Some of them are like that. Ford EV batteries (like in the Mach E) can be opened by dealerships, and individual modules (an array of cells) can be replaced. Link with pics.

Less shipping, less waste, less cost.

E motorcycles are not even in the same planet for weight and size comparison. Also voltage. EV car batteries hold huge amounts of voltage (exponentially more than an electric motorcycle battery) and something as simple as mishandling could lead to deadly results while doing something as routine as swapping out the packs. Plus architecture. Batteries aren’t under the hood; they’re in the floor pan. There are lots of reasons. Formula E racing doesn’t use modular batteries; they swap the driver over to a new car when they pit. If modular batteries were feasible; they’d be doing it already.

There is multiple way to calculate a square root https://en.wikipedia.org/wiki/Methods_of_computing_square_roots The simples to understand is iterative methods. The general idea is make a guess and then improve it.

without using any specific algorithm let's try to calculate the square root of 26. Let's find a to large and to small number and test the average of them. If the average is to small replace the smaller number, if it is to larger replace the larger

Let's first guess at 5 5 ^(2) =25, that is too low lets call it S

The second guess at 6 6^(2) =36 is to large let's call it L .

Let's try the midpoint (S+ L)/2 =(5+6)/2 = 5.5 and 5.5^2 =30.25 which is to large so replace S with it.

The next average is (5+5.5)/2=5.25 Let's repeat it in the table below. I rounded all numbers to 6 or less decimals

S        L        (S+L)/2        ((S+L)/2)^2
5        6           5.5            30.25        To large
5        5.5         5.25           27.5625      To large
5        5.25        5.125          26.265625    To large
5        5.125       5.0625         25.628906    To small
5.0625   5.125       5.09375        25.946289    To small
5.09375  5.125       5.109375       26.105716    To large
5.09375  5.109375    5.101563       26.02594     To large
5.09375  5.101563    5.097659       25.986102    To small
5.097659 5.101563    5.099611       26.006032    To large
5.097659 5.099611    5.098635       25.996079    To small
5.098635 5.099611    5.099123       26.001055    To large
5.098635 5.099123

Let's stop at this point. We can see that the square root is in between 5.098635 and 5.099123 so we know it to be two decimals as 5.09. We could continue this forever and get closer and closer. Many roots like this will have an infinite number of decimals so wee needs to stop.

The algorithm above is not an especially efficient one because it converges quite slowly but it is a good example of an iterative way do numerical find a solution to an equation.

The guesses I made were so you quickly get some decimals correctly. But you can pick a conservative guess like 1 and the number /2 that will work for any number we look for a root for that is larger than 1

Newton-Rapson https://en.wikipedia.org/wiki/Newton%27s_method method is faster, but exactly why you choose that formulais a lot harder to explain.

Let's call x the guess and a number we look for the root of in this case a=26. The next guess can be calculated 1/2( x + a/x) let's start with 5 and calculate the next number as 1/2 (5+26/5) = 5.1 . The next step is 1/2 (5.1+26/5.1)

I added a space among the decimal at the point it is longer accurate

5
5.1
5.099019 6078431372549019607843137254901960784313725490196078431372
5.09901951359278 57010906650681807043140270913210506275188406452756
5.099019513592784830028224109022 8563911005788636011794938296893309
5.099019513592784830028224109022781989563770946099596407584970804 9


The square root is
5.0990195135927848300282241090227819895637709460995964075849708044...

The number of accurate decimals doubles in each step. That is a very efficient way to find a square root of a number

It's the question marks.

Usually people use multiple question marks like that when they aren't asking a real question but asking a rhetorical question to make the OP sound like an idiot. Usually in the context of trying to point out "obvious" information.

Fair point.

I'm not OP but thanks for your amazing answer!

To combat waste that'll probably be what happens pretty soon. Currently each manufacturer is racing to make the battery with the largest range at the cheapest cost to get ahead in the market. Once we reach an inflexion point (my guess is 2025) then maintenance will be something customers really focus on.

That was not a question, it was a speculation. And too many question marks. (I didn't downvote)

there are many good answers in this thread ,but I haven't seen this point:

More batteries = more connections

My first rule of troubleshooting is "90% of the problems are in the connections". You'd be surprised how many 'dead' TVs and PCs come back to life when the power plug is taken out and re-inserted. Each connection is another point of failure in the system. If you had ten batteries, you'd have ten times the chance of a failure.

And presumably, you'd have the consumer opening the hatch and changing the battery. I can tell you, the engineers in most tech companies would hear "consumer changing the parts" and have a heart attack. It's a recipe for a host of problems.

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Grab and go batteries for what exactly? Lead acid batteries for gasoline powered motorcycles or batteries meant for electric scooters and mopeds?

For starters when I saw modular batteries I mean batteries in which you can swap out individual cells as the original post suggests, not whole batteries you can swap in and out of a vehicle. Secondly though car makers could standardise batteries between them this would severely limit them in many ways. We like to think of batteries as the equivalent of a gas tank in an internal combustion car but that's not exactly the case. Yes batteries store an amount of power inside but the role of the fuel pump is also up to the battery, that is the rate at which it can charge or discharge has to do with the battery. Moreover the weight and shape of the battery changes from manufacturer to manufacturer and in many cases the battery housing serves as a structural member. This means that not only the capacity and therefore range are determined by the battery but also the charging times, power output, vehicle handling and weight distribution and chassis construction. So if you limited manufacturers on using a specific set of batteries, they'd all basically have to make the same cars, just with different looks. Two cars using the same battery but different electric motors would still have the same maximum power output at the wheels which is limited by the battery, a stronger motor wouldn't be able to draw power at a faster rate to output more power to the wheels.

There are multiple YouTube videos of people fixing battery packs for free or nearly free where the dealers insisted the whole thing needs replacing. In one case it was just a dirty connecting plate.

But this applies to most car repairs. $3 microswitch on the lock assembly failed? Sorry, you need a $300 lock assembly. Oh your turn signals stopped working because of some oxidation on the column contacts? Well we could spray 20¢ of contact cleaner on it but instead we want $1000 to replace the stalk assembly.

Could go on and on.

Yo dude same. Is 25 years I cannot even smell it,same with anice or everything associated. Mint and liquirice are fine!

"Breaking your back" often isn't used in it's strictest medical definition, so doesn't necessarily mean breaking a bone. It can mean dislocating one of the bones/joints to the point that it affects or damages the spinal cord. That, in layman's terms, means "something in your back is broken" (aka "spinal injury"), which loosely translates to "breaking your back". Same way a "broken" ankle or wrist can actually just be a dislocated bone. It's just easier/more common to say "It's broken" for most people who don't need an exact medical breakdown/explanation to get their point across

Yes, but you'd have to actually sell a mattress... your inventory is easily tracked through your supplier. If you say you sell 1000 mattresses, it would be easy to verify that.

Also, no one pays cash for a mattress.