To my knowledge, we also have zero evidence that they didn’t exist. Nor have we ever observed matter/energy appearing out of thin air vaccuum, so it seems unlikely to me.
Yeah, I suspect that the universe may expand and contract, so likely all the matter in the big bang came from it all being compressed from the previous cycle.
I also think all total matter gets distributed the same way each cycle, so I guess I think all matter that exists now is the same matter that has existed always.
I also think each cycle, everything happens the same way deterministically, even though it would be exciting to see if maybe events happen differently each cycle.
My crackpot theory is that there’s a universe inside each black hole and we’re currently inside a black hole. All of the matter that a black hole ingests feeds into a big bang on a separate timeline.
The big bang was a singularity where our understanding of time and space breaks down. Well a black hole is the same thing.
Hypothetically if this where true where would the original black hole come fromh
Well, yes and no. Time is a concept derived from a change in state. There is no “real” time. If the universe before the Big Bang existed in a static state, then the concept of time itself becomes meaningless. So in that case, it would be “before time” in a sense
I like how there are at least three things that are immediately recognizable as wrong with this question.
Can time really exist if there was no frame of reference to measure it? We can only detect it by motion or entropy. It’s the only way of “time”. So if there was some point where there was nothing that moved, then time wouldn’t exist.
For that matter, there’s no way of measuring if time is even consistent. If it were constantly speeding way up, or slowing way down, we’d have no way of knowing.
Time is just a figment of our imagination so we can keep track of movement. Just like magenta isn’t a real color.
Time is an illusion
It’s just a human made concept to create a reference to measure shit
Well, we haven’t directly observed matter appearing spontaneously in a vacuum, but we have evidence to support it does happen
My layman’s understanding is that virtual particles can and do emerge from vacuum, but in ways that usually cancel out before affecting anything. Occasionally it does affect normal stuff - see the Casimir effect acting on surfaces very close together.
I personally suspect this is an explanation for dark matter and a possible origin of the universe.
If there’s tiny bits of stuff and anti-stuff blinking in and out of existence, anywhere there’s a big fat nothing, both halves should still exhibit gravity before blipping back out. It wouldn’t show up as normal matter because it spends most of its time not existing. The vacuum really is empty… on average. It just hums with enough short-lived quantum shenanigans to have nonzero mass.
And if this follows a steep curve for distribution, then it’s like blackbody radiation. A hot rock will overwhelmingly emit photon wavelengths near the peak, for any given temperature, but in theory any temperature can emit any wavelength. It just happens with vanishing rarity as you get up into the spicy photons. If vacuum will occasionally fart out a particle and antiparticle, then very occasionally it should fart out two particles and antiparticles, together. And with vanishing rarity it can theoretically fart out an arbitrary quantity of mass, alongside a negation that is presumably equal. But if that’s off by a little bit - if it’s allowed to be off by a little bit - then an equally arbitrary quantity of mass will remain. Even if the masses have to match exactly, they could recombine in ways that produce angular momentum and never properly rejoin. And if vacuum produces gravity, well, anything that’s left will accelerate away in all directions.
On cosmic timescales it’s possible that matter just kinda happens. We’d be left with the question of why the fuck that’s how anything works, and where all this quantum vacuum bullshit came from. But creationist cranks would have to retreat back to the first sentence. In the beginning, there was nothing. And it was slightly heavy.
Evidence of god?
ZEROOOOO
The hot big bang is basically just “let there be light” wrapped up in science words and don’t get me started on the period of rapid inflation. It’s incredible to me that the bedrock of modern physics is hand-waved away to get grad students focused back on either bigger nuclear plants and bombs or more qubits.
Please start on the period of rapid inflation. I’m curious to find out what you think
There are a ton of competing models for how the early universe formed. In order to explain why the universe is so smooth and flat though, they all invoke the idea of a short (10e-37 seconds) period of time immediately following “the singularity” that is presumed to have been literally the first point. During inflation the universe blows up 100000 times in size (and correspondingly drops in temperature by the same factor) then immediately slows down to roughly the rate of expansion we see today.
There are a lot of simulations and theories about this could have worked. And I’m sure they all have lots of grounding and math and believers. But none of thr explanations I’ve ever heard amount to more than “when I do this funny thing, the math works and none of of us know why” and that has been the state of quantum physics for 70 years: a series of “we don’t know but the math works.”
In software, we call that tech debt and I feel like our current model of profit-driven science isn’t capable of actually finding or reporting the answers that underly the debt-riddled results out of modern labs.
I’m glad there’s someone else out there with the same concerns.
I’d be more glad if unknowns and inconsistencies were frankly acknowledged. Even though in some senses Feynman contributed to the metaphorical tech debt, one of the things I love about his lectures is his frankness in regard to the (then) current state of knowledge, and about how much was simply unknown. Much of that is still unknown, and there are major glaring inconsistencies that are handwaved into oblivion.
To be clear, this is not an “anti-science” comment, but rather a desire to see the institution of science become more consistent, and to address unknowns honestly.
Evidence of happiness in life? Zero
Your options are “grow” or “repeat”. Unfortunately, you’re the one most equipped to take responsibility for your own life, but you evolved into this situation, and evolution is messy. It’s not your fault, bit it’s your responsibility.
Accepting those things deeply enough, and what they mean personally, changes everything.
