That was Hubble who discovered cosmic expansion was a real thing. einstein believed in a static universe and made up a constant specifically to model a static universe in general relativity

Its more related to limits of knowability of events beyond a certain scale. Its easy an intuitive to think of it like spacetime is quantized like pixels on a grid with a minimum action requirement of time and energy to move between them. But its not that simple or at least that kind of granular discreteness is not proven (though there are digital physics frameworks that treat spacetime discrete like this)

The Planck length does not define the minimum distance something can move but rather the minimum scale of meaningful measurement that can make a bit of distinction between two microsstates of information. In essence it says that if theres two continuous computational paths that differ by less than a sub-plancks worth of distinction there is no measurable distinction difference between them and the paths get blurred together.

Its a precision limit that defines how exact we can measure interactions that happen within the distance between two points.

It’s possible that spacetime is continuous at a fundamental level, but the Planck length represents the scale at which quantum fluctuations of spacetime itself become so violent that the concepts of a ‘path’ or a ‘distance’ can no longer be defined in the classical sense, effectively creating discrete quantized limits for measurement precision.

Ultimately this precision bound limit is related to energy cost to actualize a measurement from a superposition and the exponetial increase in energy needed to overcome uncertainty principle at smaller and smaller scales. The energy required to actualize a meaningful state from a sub-planck length would be enough to create a kugelblitz black hole made from pure condensed energy.

This same logic applies to time, giving us the Planck time, the shortest meaningful interval. So, in a way, the Planck scale does define a fundamental limit on the ‘speed’ at which distinguishable events can occur.

Is the speed of causation propagation linked to plank length?

Yes, more specifically the Planck length is derived from an equation involving the speed of light/causality.

Where C is light, h is reduced planck constant, and G is gravitational constant. Together they tell us the fundamental unit length of meaningful distinction, a very important yard stick for measuring the smallest distances.

I have no religious beliefs. The thing that trips me up is how is there matter in the first place if none can ever be created? Why was there stuff at a single point at some time

The “matter/information can’t be created or destroyed” thing only applies to closed systems within their own operational bounds. It’s about logical consistency within a closed set, but that tells us nothing about where the closed set itself came from. All the energy from the big bang/first universal iteration was loaned from somewhere else. The how and why of this is probably going to remain a mystery forever because our simulations of the laws of physics can’t go back to before the big bang.

So the nature of the big bang and why anything exists is one of the big open-ended philosophy-of-science questions that there isn’t an easy falsifiable answer to. It’s up to interpretation. I have my own theories on the topic but any guess is as good as another.

From the good old classic “Because God Did It™” to “bubble universes that foam out from a hyperdimensional substrate with random laws of physics/math that sometimes allow for observation and life” and everything in between. It’s all the same to me because we can’t prove anything one way or the other.

What your asking directly stems from two related open ended philosophy-of-science questions. These would be " Are universal constants actually constant?" and “Does the speed of light differ in speed at any point of time in its journey between two points of space in a continuous substrate?”

The answer to both like all philosophy questions is a long hit on the pot pipe and a “sure man, its possible but remains unlikely/over engineering the problem until we have justification through observing it” however I’ll give my two cents.

“” Are universal constants actually constant?" " it probably depends on the constant. Fundamental math stuff that tie directly into computations logic and uncertainty precision limits like pi are eternal and unchanging. More physics type constants derived from statistical distribution like the cosmological constant might shift around a little especially at quantum precision error scales.

The speed of light probably is closer to the first one as its ultimately about mathematically derived logical boundaries on how fast any two points universe can interact to quantize a microstate. Its a computational limit and I don’t see that changing unless the actual vaccum substrate of spacetime takes a sudden phase shift.

“Does the speed of light differ in speed at any point of time in its journey between two points of space in a continuous substrate?”

Veritasium did a good video about this one. The answer is its possible but currently unmeasurable . so if all hypothesis generate the same effective results then the simplest among them (light maintaining a constant speed during both ways of trip) is the most simple computationally efficient hypothesis among them.

Do you really believe that in all of eternity, we happen to be just four and a half billion years in? We are probably on our infinite life, and have infinite more to go. Just completely random lives, no idea where we will end up, nothing persists.

Yes I do, though must clarify its the earth that is estimated 4.5 billion. the universe itself is currently estimated at 13.8 billion years since big bang.

There’s a difference between the philosophical idea of an eternal process of cosmological rebirth, and the experimentally observed behaviors of the current universe we live in captured with our most powerful instruments and our best mathematical models.

In the 20th century we built telescopes powerful enough to see into the very distant universe and track the movement of galaxies. Because of this technological achievement we observed some strange things.

First was that galaxies seemed to be moving further and further away from each other. Not only that, they were moving away at an accelerating pace. This uncovered the idea of cosmological expansion, that over time our universe “spreads out” and creates new space between already distant objects.

Second, because the speed of light is finite, this creates fundamental limits to how far we can observe (the cosmological horizon) and a crazy cool phenomenon where the further you look into the distant universe the further back in time you look due to the age of the light from the star and the distance it traveled. We can literally see how the universe looked billions of years ago and calculate how far back we are looking.

If you look back far enough with extremely low frequency radio telescopes you can map out the thermal radiation from when the universe was extremely hot and dense about 380,000 years after the Big Bang. This is called the Cosmic Microwave Background. It shows the universe was in a very condensed high energy state.

Third, we have concepts such as the second law of thermodynamics that says entropy increases in closed systems. Energy always spreads out and systems tend toward disorder on a global level. We have equations that very accurately describe this distribution.

With these breakthroughs we had enough data to simulate accurate matter distributions of the current universe, observe and accurately model matter distributions in the distant past, and use that model to find a best prediction of what may happen in the future with what we currently know. All three lines of evidence point to a universe that is roughly 13.8 billion years old with a definite beginning and end state.

This can still be reconciled with spiritual beliefs if your willing to redefine eternity to something more like an eternal cycle of rebirth with the heat death of one universe bootstrapping the creation of the next iteration. You may enjoy Futuramas bit on it.

Nice picture! I’m getting some strong golden angle vibes from that leaf arrangement.

The actual answer is

1. because the universe had to pick a finite number and it probably doesnt use meters as an internal measurement ruler for scaling so it’s an arbitrary large random number to us.

2. Why did it have to pick a finite number? Because it has finite lifespan and resources for actualization. This forces hard speed limit.

3. The speed of light has nothing to do with light it’s a shitty name that makes understanding its true nature needlessly complex.

In actuality all massless waves/particles including photons, gravitational waves, and neutrinos will move at the speed of light, because thats as fast as anything massless can go. Its a universal speed limit for any real mass-particle, which is ultimately governed by Planck’s constant and the symmetry preservation of Penrose spacetime diagrams. Its the speed of causality a universal framerate limit that tells us the universe flows/computes through discrete microstates with ultimate precision limit bounds.

IMO 4k resolution is overkill its way past the optimal between file storage and visual fidelity. Nobody has ever complained about the visual quality of my 720p or 1080p sourced stuff much in the same way most sane people wont notice the difference between FLAC and mp3 on average listening. Bhack in my day we were lucky to get 480p on a square box tv.

Less danger than OPsec nerds hype up but enough of a concern you want at least a reverse proxy. The new FOSS replacement for cloudflare on the block is Anubis https://github.com/TecharoHQ/anubis, while Im not the biggest fan of seeing chibi anime funkopop girl thing wag its finger at me for a second or two as it test connection, I cannot deny the results seem effective enough that all the cool kids on the FOSS circle all are switching to it over cloudflare.

I just learned how to get my first website and domain and stuff setup locally this summer so theres some network admin stuff im still figuring out. I don’t have any complex scripting or php or whatever so all the bots that try scanning for admin pages are never going to hit anything it just pollutes the logs. People are all nuts about scraping bots in current year but when I was a kid allowing your sites to be indexed and crawled was what let people discover it through engines, I don’t care if botnets scan through my permissively licensed public writing.

Similar story here! A couple years ago learning about Gemini/gopher/smallnet from mentaloutlaw videos. So I joined a public access Unix server (first SDF later tilde.team) and learned how to write my own capsule site for a few years. Learned some basic .CGI bin and awk processing to create a gemtext to epub converter that made small ebooks of daily post in atom feed. It was like training wheels really helped prepare me for the transition to full self hosting capsule and website

Thanks for sharing! It was a good read. They have good points for security and clarity revisions.

A lot of Gemini spec choices were made to dissuade feature creep. Youre probably never going to do banking through Gemini but its also pretty much gaurenteed you’ll never need adblock either.

Gemini is appealing from the perspective of novice self hosters. Its simple enough that most people can set up a simple server and publish on their site within a few hours. Its minimality enforces maximizing the most reading content for least bits used. 95% of modern webpages isnt even for reading or reference its all back end trackers and scripts and fancy CSS. Newswaffle shows just how bad it is.

When I read through a gemtext capsule I get the impression I’m looking at something that was distilled into its most essential. No popups no adds no inline images or tracking scripts or complex page layouts. My computer connects to the server, I get back a page of text or an image of a zip file. Once and done.

Linux Mint 22

Im a hobbiest who just learned how to self host my own static website on a spare laptop over the summer. I went with what I knew and was comfortable with which is a fresh install of linux and installing from the apt package manager.

As im getting more serious im starting to take another look at docker. Unforunately my OS package manager only has old outdated versions of docker I may need to reinstall with like ubuntu/debian LTS server something with more cutting edge software in repo. I don’t care much for building from scratch and navigating dependency roulette.

I wrote my own set of tools in python that convert a simple gemtext formatted .gmi file into a static HTML file thats served by apache.

I’m a big fan of the Gemini Protocol project and found that handwriting pages in gemtext was ideal for focusing on text content and not worrying about formatting. Converting it to HTML+CSS with some scripts is pretty easy.

If anyone’s interested I can give a link, currently just hosting source locally on my website, really should get a public github running.

deleted by creator

Careful now thats a nuanced opinion that doesn’t stroke my victim complex or reductively imply anyone who disagrees with me on complex systemic social issues is a nazi supremacist.

Prepare to be downvoted and hit with five paragraph essay replies picking apart everything you just said. You racist, mysoginistic, hateful, privileged, homophobic, transphobic, double checks progressive slurs & insults 101 field guide uhh third Reich bringing supremacist scum.