0:25 Confirmed
“Even the color of your skin only shows up when huge numbers of atoms work together.”
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Episode
No Atom in You Is Alive. So Why Are You?
No atom in your body is alive. So how does stuff that isn't alive turn into something that lives, thinks, and wonders what it's made of? We go from a single atom to your brain and watch Conway's Game of Life run live, where four simple rules are enough for gliders, glider guns, and even working computers.
Try it yourself
Conway's Game of Life
The game from the episode runs in your browser too. Place a few cells, press Start and watch what four rules turn into.
Sources
32 claims, 86 sources. Research as of October 17, 2026.
How we check
This page lists every factual claim from the video, with the sources it rests on. Every claim in the video is backed by these sources. We saved each page when we read it. The archived copies on the Internet Archive show what the page said at that time, even if it changes later.
Not everything is equally well backed. We say so openly in the video, and here it's marked on every claim:
- Confirmed
- At least two independent, reputable sources say the same thing.
- Own measurement
- We measured this ourselves. The video shows how.
Found a mistake? Tell us in the comments under the video or at hi@kadeemy.com. We pin corrections to the top there.
Intro 0:00A game with no players
Chapter 1 1:13Almost nothing down there
“Depending on the atom, the whole thing is ten thousand to a hundred thousand times wider than its nucleus.”
“And that marble holds almost all the mass. More than ninety-nine point nine percent.”
1:51 Confirmed also at 1:23, 2:00
“The space in between isn't completely empty. Electrons aren't little balls on tracks. They're more like a fuzzy cloud.”
“The color you see isn't inside any single atom. It only shows up when lots of atoms play with light together.”
Context: The sources here support the example in the video: gold in tiny grains turns glass red, as in the Lycurgus Cup. Single atoms can emit light of particular colors (a sodium lamp glows yellow). The color of everyday things, though, only appears when many atoms interact with light together.
2:30 Confirmed also at 0:21, 2:27, 2:36
“Temperature is an average. An average over the jiggling of a huge number of particles.”
“Your nose has about four hundred kinds of smell receptors, and it's your brain that turns their pattern into a smell.”
- Genetic variation across the human olfactory receptor repertoire alters odor perception (Trimmer et al. 2019)
- Diverse evolutionary rates and gene duplication patterns among families of functional olfactory receptor genes in humans
- Press release: The Nobel Prize in Physiology or Medicine 2004
- Richard Axel and Linda Buck Awarded 2004 Nobel Prize in Physiology or Medicine
“Everything you've ever touched is built from just three kinds of particles: up quarks, down quarks, and electrons. Two ups and a down make a proton. One up and two downs make a neutron.”
3:25 Confirmed
“Sodium is a soft metal that reacts violently with water. Chlorine is a poisonous gas. Put them together and you get table salt.”
“In 1972, the physicist Philip Anderson put it in three words: More is different.”
Chapter 2 3:50Four rules
“The British mathematician John Conway invented a game for exactly that. It became famous in 1970 through a column by Martin Gardner in Scientific American.”
4:52 Confirmed also at 0:02, 0:05
“No goal, no plan, no player. You set down a pattern and watch.”
“And then there's this pattern of five cells. After four rounds, it looks exactly like before, just one square over.”
5:29 Confirmed
“Conway offered fifty dollars to anyone who could show whether a pattern can grow forever. Soon after, a group led by Bill Gosper found a glider gun.”
5:38 Own measurement
“It fires a new glider every thirty rounds.”
No external source: We measured this ourselves, on October 1, 2026. Anyone can repeat the measurement.
5:43 Confirmed
“Today we know you can, in principle, build any computer inside this game.”
5:48 Confirmed
“Gliders are the signals. Where they collide, the computing happens.”
Chapter 3 6:13Nobody's in charge
6:28 Confirmed
“Researchers in Rome measured it: each starling pays attention to only about seven neighbors.”
“In 1987, the computer scientist Craig Reynolds recreated flocks on a computer. Three rules were enough: Keep your distance. Fly the way your neighbors fly. Stay with the group.”
“The queen may be called a queen, but she doesn't give orders. She lays eggs.”
“In a famous experiment, ants had two paths to food, a short one and a long one.”
Context: In the original study, more than 80 percent of the ants used the short path in 11 of 14 runs. When the short path was only added later, most stayed on the long one. Self-organization finds good paths, not always the best one.
7:33 Confirmed
“They build bridges out of their own bodies, right where it shortens the trip.”
“Researchers in Japan set out oats for it, arranged like the cities around Tokyo. The slime mold connected them with a network that looks strikingly like the real rail network.”
Chapter 4 7:56A brain made of the clueless
8:00 Confirmed
“Your head holds about eighty-six billion nerve cells.”
“It's connected to hundreds or thousands of others.”
“It's one of the big open questions in science.”
Chapter 5 8:50You are a pattern
9:03 Confirmed
“Your body replaces about three hundred thirty billion cells every day. That's roughly one percent of all of them. A red blood cell, for example, lasts about a hundred and twenty days.”
9:30 Confirmed
“You're made of about seven octillion atoms. That's a seven followed by twenty-seven zeros.”
Chapter 6 9:43Is everything information?
9:58 Confirmed also at 9:51, 10:10
“That's why the physicist John Wheeler once called up his student Richard Feynman. His idea: all electrons are the same because they're all the same electron.”
10:16 Confirmed
“Add up the masses of a proton's three quarks, and you get only about one percent of the proton. All the rest is energy, the motion and binding of the particles inside.”
Context: This means the sum of the rest masses of the three quarks, about 1 percent. If you count interaction effects too, lattice calculations get about 9 percent (Science News, 2018). Either way, almost all of the proton's mass is energy.
“Diamond and graphite, the stuff in your pencil, are both made of carbon.”
“He called it "It from Bit."”