/biz/ - Business & Finance

[Anonymous No.10564903]

it boggles my mind that this is not taught in schools

[Anonymous No.10564928]

>>10564903
He is our alien.

[Anonymous No.10564933]

If they tried it in America you'd get too much pushback from mouth breathingn republicans who are upset math isn't being taught the same way they learned it 40 years ago.

[Anonymous No.10564948]

>>10564903
So this is how autistic people think

[Anonymous No.10564950]

>>10564903
at post like this you notice that Vitalik should really have visited a university for some time. He sounds like a retard

[reluctant kneepad girl No.10564952]

Us math chads don't give a shit about your optimal computer algorithm, code monkey.

[Anonymous No.10564970]

He needs a life coach

[reluctant kneepad girl No.10564982]

>>10564952
Stop impersonating me

[reluctant kneepad girl No.10564985]

>>10564982
We're both fakes. Now fuck off.

[Anonymous No.10564988]

what the fuck is money skelly on about, you unironically get the same answer either way you do it

[reluctant kneepad girl No.10564996]

>>10564985
Ha you're too smart for me

[Anonymous No.10565005]

>>10564988
less computation you brainlet

[Anonymous No.10565023]

>>10564950
this is why money skelly hates chainlink; because it was developed at a university for (((them)))

[reluctant kneepad girl No.10565029]

>>10564996

[Anonymous No.10565033]

tfw just did an hour of vortex math...

[Anonymous No.10565046]

>>10565005
>more steps
>less computation

[Anonymous No.10565049]

Seems like a waste of time. You get the same number regardless. Imagine all of the extra keystrokes he's wasting if he codes like this.

[Anonymous No.10565066]

>>10564933
I completely agree with you, outright fascists should take over science education.

[Anonymous No.10565070]

>>10565005
How is it less computation when there's more operations taking place? No wonder ETH is so slow

[Anonymous No.10565074]

>>10565005
how is it less computations?
in any case you need to enter both A and B

so in case 1 you have:
>a+b (one calculation)
>/2 (another calculation)
two calculations total

in other example
>b-a (one calculation)
>+a (another calculation)
>/2 (another calculation)
three calculations total

or am i missing something?

[Anonymous No.10565077]

>>10565005

only matters if you're doing this by hand or something. its actually easier/quicker to do (a+b)/2 on a calculator, in fact if you're doing many computations is probably less error prone to do (a+b)/2. Its also much clearer in a program as people know exactly what you're doing (if you're not just calling a math library on a set of data). Its so autistic to think one way is better, in fact most people just think like a + (b-a) / 2 in their head anyway when dealing with simple numbers. You are a pseudo intellectual brainlet if you think you are special by knowing that.

[Anonymous No.10565105]

>>10565074
im not cs graduate, but my guess is that it relates to creating a bigger number which takes up more memory. or maybe not

[Anonymous No.10565108]

1. LOAD A
2. LOAD B
3. SUM
4. LOAD 2
5. DIV

1. LOAD B
2. LOAD INV A
3. SUM
4. LOAD 2
5. DIV
6. LOAD A
7. SUM

Yeah, sure skelly. "Less" computation.

[Anonymous No.10565130]

Doesn’t he have anything better to do like purchase more lambos

[reluctant kneepad girl No.10565140]

>>10564903
what am you do if want average more than two numbers ?_?

[Anonymous No.10565142]

>>10565074
>he added a before dividing by 2

lol fucking mathlet!

[Anonymous No.10565144]

>>10564903
Is he implying people multiple odd numbers by 2 before dividing by 2 to try and avoid bad numbers? I dont get it lmao

[Anonymous No.10565153]

>>10565077
the fact that you can't tell this is a shitpost thread makes me question your ability to call others brainlets

[Anonymous No.10565169]

>>10565140
Why are you so stupid and ugly, mentally and physically damaged both here and in reality? I have literally never seen you post anything remotely intelligent, original or funny here. All you do is shit up the place with you 8 syllable sentences and let everyone know it was indeed you who dropped that turd of a "thought" on this board.
Thanks to you I have started to advocate for euthanasia to be accessible without any specific reason to everyone, so you could freely end your existence on this planet, because you will NEVER EVER find happiness nor wealth with your cruel handicaps.
Everyone wishes you were dead, ESPECIALLY your family, nobody loves you and nobody likes the idea of having deranged cripple who only produces debt, misery and uncertainty in their family. They might never say it out loud but everytime they look at you they wish you would die already and would stop being a baggage of depression to them.
Maybe you think you are strong just by virtue of existing - but you couldn't be more wrong, the people around you tolerating your existence, the family of yours who carries you as an emotional and financial burden, the doctors pointlessly trying to cure you, THEY are strong. You however, are just a rotting, retarded waste of oxygen and protein.
Do one good and brave thing and end the suffering for them and for you.
Kill yourself.

[Anonymous No.10565172]

>>10565140
Hows the butthole?

[Anonymous No.10565191]

>>10565142
wouldn't it need to be written as
a + ( b - a /2 )
if you were supposed to divide by 2 before adding a?

[Anonymous No.10565200]

>>10565074
>buffer overflow
hmmmmmmm

[Anonymous No.10565204]

>>10565046
imagine not understanding something so much that you think this is an appropriate and/or brilliant response

[Anonymous No.10565215]

>>10564903
>he thinks compilers don't already do these optimizations for you
I thought he was supposes to be a computer science genius

[Anonymous No.10565227]

>>10565070
kek

[Anonymous No.10565258]

>>10565215
this pretty much, and even then they avoid DIV/IDIV like the plague already since it eats up so many cycles

[Anonymous No.10565266]

>>10564903
Memorizing dozens of special-purpose formulas is useless because you will never remember them when the time comes to use them. The schools focus far too much on memorizing formulas already.

What's more important is to get the number sense to come up this these techniques on your own. Being good with numbers makes remembering these tricks unnecessary.

I was never taught this and never formally derived it, but I still use it to find averages because I'm used to numbers and can intuitively understand that it will work. That is what schools should try to teach.

[Anonymous No.10565279]

>>10565215
This is one of the signs of autist programmers who USUALLY get stuck trying to make perfect code and never really accomplish anything. While some butterfingered retards build Skyrim and smash a metric fuckton of esp files together and create art.

[Anonymous No.10565372]

>>10564952
and this is why almost every software released in the last 15 years is a complete mess of unoptimization and bugs, especially video games.

[Anonymous No.10565386]

>>10565046
>he thinks three steps of 2+2 is more computation than 1 step of 43636 + 5366536

[Anonymous No.10565387]

>>10565372
>especially video games.

Do you prefer a game you can play or no game at all. Because it sounds like you would prefer nothing ever get finished ever.

[Anonymous No.10565435]

>>10564903
>spazzing out over common knowledge

[Anonymous No.10565439]

>>10565372
t. has no idea how software work

computers are dumb as fuck, try to make a simpe flappy bird by yourself, with all the necessary features for publishing, and see how much fun you have. Multiply the work by 10 if you're doing an AAA game, the kind you probably play

[Anonymous No.10565450]

>>10565387
You don't understand. There are different people actually building the game on top of the engine, and the ones building the engine itself.

People who build game engines nowadays, or even just try to modify or use tools to build on game engines like UE4, cryengine, etc, are absolute fucking retards with no mathematical competence and game companies don't take that aspect of creating a game serious enough, so they don't hire the right people to do it. They just wing it, relying on game designers to code it instead of real game engine coders.

It wouldn't take that much more effort. In fact, a lot of shit breaks and you need extra effort due to having to fix the dumb shit game designers do when they try to make or modify game engines for their needs, and they usually are so incompetent that it takes them 5-10x longer to figure out what the (avoidable in the first place) problem is, if they ever do.

Every elder scrolls game actually had a very good engine for its time. They care about the competence of their game engine creators.

[Anonymous No.10565456]

>>10565439
>Multiply the work by 10 if you're doing an AAA game, the kind you probably play

fucking 10 isn't even kind of close to describing a AAA game dev cycle.

[Anonymous No.10565468]

>>10565450
>There are different people actually building the game on top of the engine, and the ones building the engine itself.

And those are the idealistic fuckers I have to argue with because they dont fucking understand what its like to be a god damn human half the time. Its like I'm talking to machines.

[Anonymous No.10565475]

>>10565456
probably, I can't even imagine cause I'm a scrub

[Anonymous No.10565497]

>>10564903
That's not even true. The correct way is to use 0.5 * (a + b) because divisions are slow as shit.

[Anonymous No.10565503]

If I wanted to make it faster what more formula do I have?

[Anonymous No.10565536]

>>10565497
He's talking about doing the calculation mentally or on paper, not about coding, I don't know why everyone is talking about coding in the thread. If it's about coding what he says is not true unless making the computation with larger numbers is slower which doesn't makes sense because an integer has the same number of bits whether they're zeros or not, but I'm not educated enough to be sure

[Anonymous No.10565547]

>>10564903
Search for catastrophic cancellation

[Anonymous No.10565560]

>>10565439
Half the time I think engine programmers would have us build everything with text files and command lines in a dos window than build workable tools that can avoid creating those bugs in the first place.

Creative people, especially artists are not logical people in the same way that programmers are. So any time you end up in an environment where you have super smart engine programmers that are also in charge of the company, Carmack types you end up with awful shitty tools, 10x the steps to import a fucking fbx and scripting language thrown together for lulz.

Let the bugs flow through your veins.

[Anonymous No.10565563]

>>10565204
>>10565386
>t. autistic "savants"

[Anonymous No.10565599]

>>10564988
That's the point idiot

[Anonymous No.10565623]

what about (b - a)/2 + a?

[Anonymous No.10565627]

>>10565503
compiler will just change the division to bit shifting operations anyways, doesnt matter

[Anonymous No.10565628]

Don't think it is easily generalizable where there are more than two numbers. That's teaching things like this is a limiting optimization that doesn't bring a lot of improvement, but hinders learning substantially if serving as a base for further learning.

[Anonymous No.10565644]

kek. i tried it and this even worked

[Anonymous No.10565645]

itt brainlets

(a+b)/2 is clearly the shorter way because it takes 2 steps while whatever dog shit vitalik uses takes 3 steps. the only people complaining about the first one are too small brained to handle large numbers

[Anonymous No.10565658]

When is this fool going to stop shitposting on twitter and finish building eth

[Anonymous No.10565661]

>>10565645
>>10565644

[Anonymous No.10565732]

>>10564903
Anyone else unironically know what he’s talking about and actually do an even more complicated multi-step process that’s actually faster?

I do (b-a)/2=x followed by x+a

Also you should only do this for every decimal place that is unique and ignore equivalent leading decimal places until the end. So in practice 467240 and 467285 would be

85-40=45/2=22.5
22.5+40=62.5
467262.5 is your average.

[Anonymous No.10565776]

>>10565029
>Tfw it's just the original rkg with different addresses

[Anonymous No.10565782]

>>10565732
Vitalik said don't do that. Do you dare question our lord and saviour? He made people rich. Bow down you peasant

[Anonymous No.10565807]

>>10565732
That's the same exact thing besides ignoring the matching places.

[Anonymous No.10565808]

You're all shitposting right? This is common knowledge, I sincerely hope.

[Anonymous No.10565812]

>>10564903
I mean that’s how you average a stream of numbers when you can’t access the whole set at once. And it is taught in schools if you ever take a programming class

[Anonymous No.10565826]

>>10565732
>>10565732
na there is a much simpler method for this particular arrangement of numbers. 4672 are redundant, all that needs to be calced is the last 2 digits the most efficient calc is just 125/2

[Anonymous No.10565835]

I don't know what anons talking about, but I'm shorting ETH till situation with searching most optimal algorithm of computing two averages become more clear.

[Anonymous No.10565845]

>>10564903
a=1
b=2

>(1+2)/2
>3/2
>1.5

>1+(2-1)/2
>1+1/2
>2/2
>1

haha money skelly BTFO

[Anonymous No.10565923]

What he says doesnt apply all the time but it does for complex numbers... Who would really add up a few millions, add em up and divide them by two when you could just add the difference between both numbers to the first (e.g. a difference of -230 added to 2304860 giving you 2304630...). Hes just trying to tell people that doing this in your head is much quicker when dealing with high numbers that are close together, however posting that and also assuming people dont have a calculator for numbers in the range of a few millions is autistic as fuck.

[reluctant kneepad girl No.10565956]

>>10565776
i don't get it

>>10565105
the space a number takes is determined upon variable declaration when you say what type of number variable you're using (integer, double, float, short, long, etc.) afaik the proccesor/ALU can't look ahead to see if there are only zeroes filling the rest of the spaces allocated to the number (binary representation)

[Anonymous No.10565979]

>>10565644
>I did it wrong all those years. I've always calculated by (a*2+b*6)/9.333 which I heard is better, because it let's your computer fan spin way faster..

autistic money skelly completely btfo

[Anonymous No.10565981]

>>10565956
this image

[Anonymous No.10565982]

>>10565497
Underrated

[reluctant kneepad girl No.10565989]

>>10565191
order of operations, bud

[reluctant kneepad girl No.10565996]

>>10565776
We are all the original rkg.

[Anonymous No.10566020]

>>10565497
correct way is a + (b - a) * t, where t = 0.5
behold, linear interpolation.

[reluctant kneepad girl No.10566043]

>>10565981
transintdental

[Anonymous No.10566140]

>>10566020
Isn’t it just a simple register shift of bits to the right to cut by 2 if I remember correctly.

[Anonymous No.10566248]

>>10564903
how does this make sense. the first algorithm has one less step to make so it should be easier for the computer to do

[Anonymous No.10566302]

>>10565074
A cpu can do some calculations faster than others. A 10 step calculation might be quicker than a 2 depending on what is being performed.

[Anonymous No.10566614]

>>10566248

>t. brainlet

[Anonymous No.10566641]

>>10565023
>calcium skelly hates chainlink
Source on that? Or are you basing this because of the Toyota tweet?

[Anonymous No.10566730]

>>10565645
>what is factoring

[Anonymous No.10566776]

>>10565645
>hey you guys are stupid for not being able to do arithmetic with 20 digit numbers in your head

The absolute state of incels.

[reluctant kneepad girl No.10566799]

>>10564982
>>10564985

Fuck both of you hoes I'm the real one.

[Anonymous No.10566816]

>>10564903
That's dumb. The large number from adding a and b is stored in any calculator automatically for the next operation.

I'm horrified to think of how unreadable his code is if he thinks like this.

[reluctant kneepad girl No.10566988]

>>10564903
vitalik is cute t_t

[Anonymous No.10567009]

>>10565845
I thought i was retarded because no matter how many times I tried his method, i kept getting the wrong answer.

Traditional and this >>10565732 anon's way work for me.

Fuck you money skelly!

[Anonymous No.10567060]

>>10565074
Considering he mentions school I'm pretty sure he means brain computation. Doing this in your head is much easier than summing up and dividing by 2

[Anonymous No.10567073]

>>10565536
He didn't mention anything about doing it by hand, retard. Computation implies coding.

[Anonymous No.10567268]

This thread shows how many people have ever developed in Solidity. I could be wrong but this is legitimately a good shortcut because storing large numbers in the EVM is very gas-intensive. Taking the difference and then doing one operation on a smaller number is much less expensive gas wise.

[Anonymous No.10567273]

>>10564903
It boggles my mind that he didn't even mention (a+b)/2 can lead to overflow for large integers resulting in the wrong answer. He's so smart though wow

[Anonymous No.10567294]

>>10567268
of course not. if biz was full of people that actually used ethereum as developers we'd see a lot less people delusional with ideas that eos or cardano would ever "kill" it

[Anonymous No.10567329]

>>10564903
>add B to -A
>divide number by 2
>add A to result
vs
>add A to B
>divide by 2
It works better in some cases, but in the example he gave you can clearly see that the first 4 digits are the same, so you just add 40 and 85 to get 125. 125/2 = 62.5. So the average is 467262.5. Easier than his method to do in your head.

[Anonymous No.10567348]

>>10565108
DIV is more computationally demanding on bigger numbers

[Anonymous No.10567360]

>>10565191
NO!! (a+(b-a))/2

[Anonymous No.10567370]

>>10564903
this is unironically why people bully the smart, and hate / are threatened by them. who knows what other non rational but it makes sense in my autistic mind ideas they have that could translate to net result pedophilia/white genocide.

[reluctant kneepad girl No.10567391]

>>10567268
>I could be wrong
You are wrong
>storing large numbers in the EVM
this has nothing with storing numbers, it's about computing the average. EVM always uses 256 bit numbers

[Anonymous No.10567422]

>>10564903
>3 calculations is more efficient than 2

[Anonymous No.10567423]

>>10564903
I guess cause it uses less defined factors overall its less CPU intensive. I can't imagine this being more efficient for the average human to average numbers though.

[Anonymous No.10567445]

Imagine how many calculations run through this man's head when he is sticking his dick in underage Thai hookers .
Angle, thrust speed , friction, even thermodynamics.
He truly is what peak performance looks like.

[Anonymous No.10567453]

>>10565989
>>10567360
wow thanks im a literal brainlet i guess, for some reason was thinking add/subtract were done before division/multiplication lol

[Anonymous No.10567462]

>>10567370
I feel like you were going somewhere with this but then descended into /pol/ babble.

[Anonymous No.10567464]

>>10564903

>a = 100
>b = 200
>(a+b)/2 = 150
>(a + (b-a)) = 100

>according to vitality and other in this thread, 150 = 100.

[Anonymous No.10567480]

>>10567464
You didn't divide (b-a) by 2

[Anonymous No.10567487]

>>10567464

[Anonymous No.10567507]

>>10567464
(a + b) / 2 = a + (b - a) / 2 | *2
a + b = 2a + b - a
a + b = a + b

Can't believe I had to spell that out

[Anonymous No.10567642]

>>10567507
What the fuck did you just say, you little bitch?

[Anonymous No.10567680]

>>10567462
I mean we already saw how his convoluted thought processes lead to justifying pedophilia.

[Anonymous No.10567740]

>>10567680
What the fuck are you on about?

[Anonymous No.10567804]

How often do people even average two numbers? They do it that way because it’s generalizable.

[Anonymous No.10567833]

Money Skelly is best Skelly

[reluctant kneepad girl No.10567846]

me am want vitalik to choke me with his bone fingers

[Anonymous No.10567937]

Why would anything useful be taught in school? You retards seem to think school is for teaching and not indoctrination to liberal ideologies. Fucking morons.

[Anonymous No.10567949]

Everyone in this
FUCKING THREAD
who doesn't realise he's talking about mental math
Can go chew glass

[Anonymous No.10567953]

>>10567937
>liberal ideologies
Like common core and intelligent design?

[Anonymous No.10567963]

>>10566140
Not in floating point, you have to change the exponent, so * 0.5 is the correct optimization

That said, the compiler does it for you

[Anonymous No.10567985]

[Anonymous No.10567999]

>>10567937
so woke xDDXDDXDDD

WAek UP SHEEEPLE XXDD

[reluctant kneepad girl No.10568009]

>>10567937
Based and redpilled

[reluctant kneepad girl No.10568021]

>>10567999
babbys first day on 4chan

[Anonymous No.10568030]

>>10564933
America would ask where God and Jesus come into play in all this, then complain when their job gets outsourced to some Asian who has a strong grasp of math and science, and is willing to work remotely for much less. Then America will use it's tax money to upgrade the football field and add new Coca Cola vending machines all around the school.

[Anonymous No.10568046]

>>10567804
It's generalizable

2, 5, 11

2 + (((5-2) + (11-2)) / 3) = 6

[Anonymous No.10568057]

>>10564903
Dividing by 2 is a bit shift to the right, whether it is 2/2 or 10000/2. Is smelly skelly an idiot or am I missing something?

[Anonymous No.10568072]

>>10568030
gotta love American Republicans. They're literally the biggest cucks to ever exist.

[Anonymous No.10568083]

>>10568057
OK, now do an average of 2 and 3

[Anonymous No.10568122]

>>10568083
Right

[Anonymous No.10568157]

This is only useful when a and b are larger and proximate values. It is better to be straightforward than try to be "creative".

[Anonymous No.10568197]

>>10568046
This is much more time consuming than just be straightforward.

[Anonymous No.10568346]

>>10564952
>>10564982
>>10565140
>>10565989
>>10565996
>>10566988

[Anonymous No.10568426]

>>10564903
??
its common knowledge
>uh, the average of 1000000 and 1000002 is 1000001, look i did it without a calculator!

[Anonymous No.10568527]

>>10568197
Doesn't cause an overflow with large numbers. Adding a few million numbers together might.

With floating point numbers you might lose precision even if you don't overflow

[Anonymous No.10568555]

Depends on the given numbers. For

a=99999999997
b=99999999995

it's much simpler to do a+(b-a)/2, as b-a is quickly found to be 2, while adding the numbers will result in 10 carries.

That being said, he's probably mostly talking about computing in your head, as even on Ethereum this shouldn't be an issue.

You can run into an issue if your b is one digit away from the overflow, in which case computing a+b will fuck you up, while the b-a way is safe.

[Anonymous No.10568759]

>>10567985
So pajeets r responsible for the brap posting. Ive always preferred milk posters

[Anonymous No.10568824]

>>10564903
This is stupid as fuck. Classic example of self defeating intelligence. Overthinking. Sad

[Anonymous No.10568861]

>>10564933
What tf are you talking about. The education system has been extremely controlled by the left and the common core math tactics taught today are the most inefficient thing I've ever seen. I'm a republican and this is the way my brain has always processed averages, and it seems less centralized

[Anonymous No.10569198]

hey guys how about a quick average between 4786, 1999900, and 37094779872346? what's optimal for that you fucking restless slav draugr?

[Anonymous No.10569245]

>>10564933
All those republicans commonly found in inner city schools

[Anonymous No.10569307]

>>10564903

i bought at 1400 and now it's 400 and the average between those is 900 and I calculated that with the new vitalik method 14-4=10, 10/2=5 5+4=9 900 he made me poor but now I'm smarter thanks again

[Anonymous No.10569618]

>>10567391
>this has nothing with storing numbers, it's about computing the average. EVM always uses 256 bit numbers
Confirmed for knowing jack shit about solidity.

What is:
>uint8
>uint16
>uint32
>uint64
>uint128
Oh that’s right, I guess you’re just one of those people that would declare all their variables as simply “unit” but then again I know you’re too much of a brainlet to have ever looked into the solidity docs to know that uint defaults to 256-bit anyway

[Anonymous No.10569723]

>>10569198
You generally don't use arithmetic average for distributions like these, you'd use median probably