/sci/ - Science & Math

pizza is never irrelevant

In an alternate universe pizza grows on trees, is most optimal nutrition source, and gives you superpowers.

>>5821989
only if you eat the radioactive pizza

I don't really get how it works. Suppose you have a binary observation with sqrt 1 amplitude one way and sqrt 2 the other way.

So if the universe splits in two, how is one branch twice as probable for me to be in? How is that possible? Both branches are real and both branches have only one future me in them, so shouldn't I expect an equal likelihood to observing either outcome?

If the universe splits in three or more, does that mean there is in fact a difference between existence and mathematical formulizability since two branches are mathematically identical but still apparently twice as existent as the less likely branch? i.e. is that proof against the mathematical universe hypothesis?

Is there any evidence at all for the "many worlds interpretation"?

>>5823196
no

>>5823196
Probably yes but not in this universe.

>>5822041
the branch might have had a different probability before it branched off (sry), but as it has happened, it has a probability of 1.

>>5823196
It's baseless speculation and wishful thinking.

UNIVERSE NOT INFINITY!

Many-worlds is the sort of thinking you get from people who don't understand that mathematics needs an interpretation to apply it to the real world. When you think that way, what you actually end up doing is using a very naive interpretation and dismissing the possibility of others. Many-worlders look at the wavefunction used in quantum mechanics to compute the probability of different possible worlds, and their reaction is "this wavefunction says all the worlds are real." But this interpretation has serious problems such as the ones >>5822041 mentioned.

>>5821963
>>5821978

This.
Pizza is always relevant.

Interpretations are just that, interpretations, so everyone and their dog can have one since they cannot be falsified by experiment. That said, many worlds is like some sci-fi bullshit, its quite a stretch to think that those alternate timelines are as real as this one. There is a reason most physicists favor Copenhagen interpretation (or its refinement, consistent histories), its the least crazy of them all.

>>5827446

Didn't they recently found evidence for the existence of parallel universes? It was something about how they had measured the gravitational pull from another universe or something.

>>5827633
That's completely different from many-worlds. The other "universes" in aren't parallel to ours, they're just in a different part of our own. They're just regions of space where the approximate laws of physics governing low-energy processes look different. It's also just one possible explanation for the CMB cold spot.