Pemdas isn’t as arbitrary as people in this thread think it is.
I love maths, and I’m going to butcher any attempt to explain why pemdas isnt totally random. But you can look it up if you wanna know more I guess
Besides no one ever uses that notation - by the time you learn about quadratics, you leave multiplication symbols out of the equation entirely and much of the notation changes shape, with division exclusively being expressed as negative powers or fractions.
At that point you aren’t going to make mistakes, since each hyperlevel uses a different style of notation. Pemdas is used to teach 4 year olds, and it’s fucking dumb. What happens with a log, or sine function. Don’t even get me started on integrals and derivatives.
Pemdas is shit, but not because it’s abirtary. In fact it’s shit because it’s a shithole acyromn
Pemdas is mostly just factoring, kinda. That’s how you should think of it.
2x4 is really 2+2+2+2.
That first 2+(anything else) can’t be acted/operated upon until you’ve resolved more nested operations down to a comparable level.
That’s it. It’s not arbitrary. It’s not magic. It’s just doing similar actions at the same time in a meaningful way. It’s just factoring the activities.
It is, in fact, completely arbitrary. There is no reason why we should read 1+23 as 1 + (23) instead of (1 + 2) * 3 except that it is conventional and having a convention facilitates communication. No, it has nothing to do with set theory or mathematical foundations. It is literally just a notational convention, and not the only one that is still currently used.
Edit: I literally have an MSc in math, but good to see Lemmy is just as much on board with the Dunning-Kruger effect as Reddit.
If you don’t accept adding and subtracting numbers as allowed mathematical transactions, multiplication doesn’t make sense at all. It isn’t arbitrary. It’s fundamental basic accounting.
The doom and gloom has been happening since the early 70's yet here we are when we should have been frozen, burnt to a crisp, frozen, dehydrated to death, seen New York City underwater, burnt to a crisp again and then frozen. The headlines could be made by a Magic 8 Ball. Its not science when the data is hidden by the words "Proprietary"
Most predictions that have been made have been coming true. Can you show me where any of your examples were stated to have happened by 2023?
Also you do realize other places in the world will have different climate change effects… so two extreme weather patterns could happen at once its not like it would be one quick hug of death
I occasionally take the bus from NYC to a town in the Finger Lakes, and this is so true. I have been through so many towns that check off every one of these boxes.
I saw this happening in real life one time, on the back of a Dodge Neon. Best part is they were in the parking lot of a Planned Parenthood. We cheered them on, then went about our business.
The EU Cyber Resilience Act will effectively make open-source software illegal, and that sure as hell isn’t pro-consumer. Neither is all the spooky surveillance and crippled cryptography they keep trying to mandate.
Truer words have never been spoken. Nic(h)e porn, nic(h)e hobbies. It’s time to rebuild here. Also it still blows my mind to hear about the amount of money people used to throw on customizible avatars & awards( 3k, like how tf do you even live at this point)
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