What is a beautiful concept or idea that continues to blow your mind?

For me it is Cellular Automata, and more precisely the Game of Life.

Imagine a giant Excel spreadsheet where the cells are randomly chosen to be either “alive” or “dead”. Each cell then follows a handful of simple rules.

For example, if a cell is “alive” but has less than 2 “alive” neighbors it “dies” by under-population. If the cell is “alive” and has more than three “alive” neighbors it “dies” from over-population, etc.

Then you sit back and just watch things play out. It turns out that these basic rules at the individual level lead to incredibly complex behaviors at the community level when you zoom out.

It kinda, sorta, maybe resembles… life.

There is colonization, reproduction, evolution, and sometimes even space flight!

Kissaki,

How little food intake is enough to sustain extensive (physical) activity.

The little birds running on the beach with every wave, eating mini things. How can those be enough to sustain that much running? And it’ll have to sustain them when they’re not eating too.

A human can not eat for several days and still stay active. An incredible adaptation. I food conversion, storage, and priority dissolution in a complex system.

richneptune,

A human can not eat for several days and still stay active.

I’m looking at my bulging waist and feeling incredibly guilty right now!

ChanchoManco,

I’m looking at my plentiful plate of lasagna with another eyes rn.

nekat_emanresu,

I think about this a lot too! It feels wrong that so little material can allow so much work to be done. Feels like moving a mars bar should take a significant amount of the mars bars energy to move stuff around, but you could do a lap around the block and still not deplete what it gave.

l3mming,

You should have a look at Sebastian Lague’s programming videos on Youtube. He models various things (eg: predator/prey/ant colonies, slime growth) using a few very simple rules. They’re just beautiful. Example: www.youtube.com/watch?v=X-iSQQgOd1A

TitanLaGrange,

Plus he’s just fun to listen to!

arthur,
@arthur@lemmy.ml avatar

BitTorrent. I only need to share a file once and it could potentially reach millions of people. It’s old tech now but it feels like magic to me.

preasket,

One of the best pieces of software ever. And it actually works, that’s the crazy thing!

Djh8878,

What are some other rules to the excel example you gave, kinda want to try programming something like this to see how it’d play out

Kolanaki,
@Kolanaki@yiffit.net avatar

Just look up “The Game of Life.” It’s not really a spread sheet, that’s simply how it’s displayed (grids of pixels that are either living, dead, or food) and it just kinda simulates an ecosystem in the most very, very basic of ways. All you can do to influence the game is change what a grid contains, with the goal (if you can say it has any) of keeping a sustainable system going.

aCosmicWave,

Yep! The spreadsheet is just an analogy I used to help unfamiliar people visualize what I was talking about.

The actual rules for Conway’s Game of Life are as follows:

  1. Any live cell with fewer than two live neighbours dies, as if by underpopulation.
  2. Any live cell with two or three live neighbours lives on to the next generation.
  3. Any live cell with more than three live neighbours dies, as if by overpopulation.
  4. Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction
weirdwallace75,

Noether's Theorem:

https://en.wikipedia.org/wiki/Noether%27s_theorem

https://math.ucr.edu/home/baez/noether.html

Fundamentally, it allows us to logically infer the conservation laws from the laws of motion of a given physical system using relatively simple math. It always applies, no matter if we're talking about massive systems or quantum ones.

pyrrhus,

I think the concept is even more beautiful than you described:

A symmetry in a physical system implies a conservation law.

As a physicist, since the beginning of your studies you learn to appreciate and seek symmetries in various systems. At first, it’s mostly on an intuitive way to help you understand or simplify a problem. But at some point you learn about Noether’s theorem and see the even deeper meaning and power of symmetries.

For example, symmetry in movement in space (meaning I can move my entire system and it stays the same) implies conservation of momentum.

And symmetry in time translation (meaning if move the entire system a through a same interval in time and it still behaves the same way) implies conservation of energy.

fearout,
fearout avatar

The concept of emergence blows my mind.

We have this property in our universe where simple things with simple rules can create infinitely complex things and behaviours. A molecule of water can’t be wet, but water can. A single ant can’t really do anything by himself, but a colony with simple pheromone exchange mechanisms can assign jobs, regulate population, create huge anthills with vents, specialty rooms and highways.

Nothing within a cell is "alive", it’s just atoms and molecules, but the cell itself is. One cell cannot experience things, think, love, have hopes and dreams, or want to watch Netflix all day, but a human can.

The fact that lots of tiny useless things governed by really simple rules can create this complexity in this world is breathtakingly beautiful.

Kinda ties into your example :)

pyrrhus,
kenbw2,

Reminds me of the statement that you can’t dissect a rabbit to find out why it’s cute

vera,

Won’t stop me from trying [joking]

OceanSoap,

Don’t, rabbit necropsies are the worst smelling thing you’ll ever encounter.

speck,

How come? Why rabbits specifically?

OceanSoap,

Not sure why, just that I was in a building when one was being performed and it stunk up the whole place to the point I almost went home because I was going to vomit. My boss put out a bowl of liquid that neutralized the odor, thank god.

wtfeweguys,

Ok what was the liquid? That sounds useful.

acannan,

Just like the trillions of parameters that make up machine learning models that can speak or create images

fearout,
fearout avatar
kyub,

Nix

DAC_Protogen,

Pineapple on pizza, MUAHAHAHA! (I actually like that o.o )

Kabukironin,

Adjacent xkcd xkcd.com/350

tatterdemalion,
@tatterdemalion@programming.dev avatar
needthosepylons,
@needthosepylons@lemmy.world avatar

Alright, thanks to this comment section, I now need years of free times because it’s all so fascinating I need to learn about all this!

nekat_emanresu,

The beautiful idea that blows my mind, is how much better the comment section for a question like this post presents is on Lemmy, than Reddit!

raubarno,
  1. Free software
  2. Group theory, Church notation and Lambda Calculus making many things in Math under one roof
  3. Design of CPU and Operating Systems. Both fields are made by geniuses.
jrubal1462,

I was kinda oblivious to the world of FOSS until simultaneously switching to Lemmy and also resuscitating an old computer by installing Linux. It took a long time for me to wrap my head around the fact that people are just cranking out parts of OS’s, or pw managers, or file zip utilities for shits and giggles in their free time, and not even charging for it. A game or two as a passion project I could understand, but who sits down after work and plods through a zip utility?

After years and years of “if the service is free, you’re the product” it really takes some time to rewire my brain. It’s almost enough to make me wish I went into software instead of mechanical, so I could pitch in on something.

6jarjar6,
@6jarjar6@lemmy.sdf.org avatar

You could design parts or projects for 3D printing

lorax,
@lorax@lemmy.ca avatar

Symbiosis in nature….it always brings up feelings of awe and wonder for me. Especially in forests. The “wood-wide web” or “mycorrhizal network” being my latest obsession . The fact that the fungi joins the trees together through the roots to allow for exchange of nutrients, water, and chemical signals between plants. And then there’s the forest canopy, and the role it plays in keeping the forest healthy.

Trees are awesome.

szczur,

Anarchism based on mutual respect and aid. It’s truly beautiful.

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