Both sides are right in a way. It just depends on what you're comparing the +/-10% to
this post was submitted on 11 Apr 2025
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This is clearly about the US stock market crashing. In that case it's always the days gain/loss, in which case Yang is the only person who is right.
This is important because a lot of people saw "down 10%" and now "up 10%" without realizing that's still day over day loss.
That is the difference between percent and percentage points.
TBF Yang really did write the equation in the sloppiest way possible.
Like I know what he MEANS but no math professor in the world would let this shit slide.
Yeah if you put it:
100 - (100 x 0,1) = 90
90 + (90 x 0,1) = 99
It comes quite obvious. And I know the brackets are redundant, but my coder mind forces brackets to all math formulas for readability.
Was it on purpose, maybe.
Even
100 - 10% = 90
90 + 10% = 99
Works better than what he did, because that’s how you’d enter it on a standard calculator.
I think of it as
100 x 0.9 = 90
90 x 1.1 = 99
Am I the odd one out?
Yes.
But also, Barqs does have bite.
Readability is important. I do the same thing, because just because something is technically correct doesn't mean there isn't a better way to do it. I'm very pro-bracket.
It's twitter, why'd anyone put effort in what they write.
That's what makes it great bait
Yeah, for idiots
Some bureaucrats in Mexico City tried this years ago.
An important ring road had two lanes in each direction. To increase its capacity, they didn't actually widen the road; they just repainted the lane markings to turn two lanes into three, and claimed a 50% capacity increase!
Everyone immediately screamed about being crammed together just centimetres apart, accidents increased and the city officials quickly u-turned; they repainted to have just 2 lanes in each direction again.
But they then tried to claim that as that was a 33% decrease, and that because they had earlier increased it 50%, that meant they had achieved a net 17% increase in the road's capacity!
Not even close to that anyway, the dow jones for example went from 44k to 37k back up to 40k. Still hasn't even regained half the value it lost.
I have seen this or a variation of this too many times now, saving this for my own meme responses, its too fucking useful.
I might as well throw the same comment in here. You learn this pretty quickly when you bet on meme stocks. Down 90% then up 100% I can assure you, you are no where near where you started.
Same with crypto. You'll get a notification something went down 10%, then up again 10%, but if you zoom out you see it's just been slowly going down on average since the last huge spike.
Brought to you by the same people that can’t explain tides
yeah they think the MOON does it lmfao, everyone knows it's the CIA's totally epic wave machine for selling more surfboards 🌊🏄♀️🐟
Tide comes in, tide goes out. You can't explain it!
Bread goes in. Toast comes out. It’s a mystery!
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I thought this was c/funny not c/deeplyconcerning
pegglegg back in fifth grade: 'why i need to learn this math stuff. i aint never gunna use it'
It's not that you will regularly have a calculator in your pocket
Checkmate
you still need to know what buttons to push on the magic box, and in what order...
And how long to push them.
Yeah the "checkmate" was supposed to signify that irony
"It's not like you'll regularly have a little box in your pocket with access to the sum of all of the knowledge in the world but you'll have to sift through an equal amount of incorrect knowledge and have the ability to differentiate the two."
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This is why in forecasting and time series analysis is used the log difference, a 10% increase or decrease on the log scale gives you the same value being added or removed.
Yes, that requires a reference value to be decided upon beforehand.
Not really, you do t=n and t=n+1, for n= 1, 2, 3 for a quick view on volatility.
Then ypu look up for correlations between e[t=n | t= 0, t= 1...] for different Ns. For more I would need to check out my notes
Oh I was imagining something entirely different. Like a simple logarithmic scale of a signal, I do not know anything about time series analysis. Should've kept my mouth shut
It's only the same if it's up 10% compared to the original number. It all depends on your time period, you could be up 30% compared to 7 years ago.
Tesla stock prices are good example of this. They are down ~50% since december and up ~70% since lowest point in april last year.
What's it called when you "tether" a certain value at 100%. Often for economic graphs. In that case the second guy could be correct and if that's all they know it would make sense
Bunch of methamagicians up in here
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