Why Did Ancient Humans Start Believing in Gods? 🌌🗿 | The Origins of Religion and the Divine | Boring History for Sleep

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Hey there, late night wanderers. Tonight, one question. Why did our ancestors start believing in gods? And I want you to think about it the way an accountant would, because religion was the most expensive habit our species ever picked up.

34,000 years ago at Sungir in Russia, two children were buried wearing 13,000 beads carved from mammoth ivory by hand. Thousands of work hours put straight into the dirt, and that is the cheap example. At Gobekli Tepe, people with no metal and no wheel-raised stone pillars weighing 10 tons. At Atapuerca, someone dropped a brand new hand axe down a deep shaft without ever using it. Ancient humans basically invented the gift, then threw it away.

Evolution punishes waste like that, so belief had to be paying something back. So tonight we find out what. When this switched on, what in the brain produces it, and what it ended up building? And we start at the oldest place it could have begun, which is not a temple. It is a campfire. Hit that like button if you are into this kind of deep dive, and drop a comment telling me what city you are watching from and what time it is where you are. Now dim the lights and settle in. So let us go sit by that fire, because the fire is not just a cosy image to open with. It is a real archaeological object, with a real address, a real date, and a real layer of ash you can hold in your hand. And it is the first moment in the human story, where the daily schedule changed enough to leave room for something as gloriously impractical as a god.

Start with the obvious question, when did people actually get control of fire? Not stumble across a burning tree and back away politely, but keep flame, feed it, move it, own it.

The oldest serious candidates are two sites on different continents. At Wandavert Cave in South Africa, researchers found burnt bone fragments and ashed plant material roughly 30 meters inside the cave in layers close to a million years old. The depth matters. A lightning strike does not walk 30 meters into a hillside and set up shop in the back room. The other candidate is Gesha Benot Yaakov in northern Israel, dated to around three quarters of a million years, where excavators mapped tiny burnt flint chips that cluster in the same spots across multiple occupation layers.

Nobody found a neat stone ring with a kettle hanging over it. What they found were statistical shadows of fire in the same corners again and again, as if someone kept coming back to the same place to do the same thing.

Archaeologists sometimes call these phantom hearths, which is a wonderfully dramatic name for what is essentially a pattern of burnt crumbs. Here is where you need to be a little careful, and being careful is going to be the theme of this entire video. Evidence that fire happened is not the same as evidence that fire was managed. Grass fires happen. Bats leave guano that chemically mimics heat alteration. Sediments get cooked by processes that have nothing to do with anyone deliberately doing anything. For a long stretch of our past, fire use looks occasional, opportunistic, and frankly a bit amateur, which is an entirely reasonable way to treat a substance that can kill everyone you love while you sleep. The thing that changes the picture is not the earliest fire. It is the habitual one. At Qizam Cave in Israel, about 300,000 years ago, there is a hearth that behaves like furniture. It is a defined patch of roughly four square meters near the middle of the cave, built up from layers of wood ash accumulated over generations, with charred bone all through it.

Around it, the debris sorts itself by activity. In one zone, people cut meat. In another, they made small blades. The hearth is not a spot where a fire once happened. It is the center of a room, and the room has a floor plan. When archaeologists talk about the domestication of fire, this is what they mean in practice. Not the first spark, but the first permanent address. And once you have a permanent address with a permanent flame at the center, you have accidentally invented something no other animal on the planet had. You have invented the evening. Before we get to the evening, it is worth asking why anyone would maintain a fire at all, because keeping one alive is genuinely annoying. Fuel has to be collected constantly. The fire has to be watched, fed, shielded from wind and rain, and somebody has to be responsible for it overnight. In exchange, you get warmth, you get a predator deterrent, and you get the ability to cook, which is the benefit that most researchers think paid for the rest. Cooked food is softer, safer, and easier to digest, and it releases more usable energy per bite than the raw version. The biological anthropologist Richard Wrangham built an entire argument around this, proposing that cooking is what allowed our lineage to run a smaller digestive system and a much larger and more expensive brain at the same time, since you cannot afford both on a diet of raw, fibrous plants and uncooked meat. The chronology is argued over fiercely, because the anatomical changes he points to are older than the confident fire evidence, and a hypothesis that requires fire half a million years before we can prove fire is a hypothesis with a scheduling problem.