The speed of light is a governance problem

I was thinking about how much of our technological progress is really just coordination becoming faster and cheaper. The internet did not just connect people - it compressed feedback loops. Two researchers on opposite sides of the world can iterate on the same problem in real time. Errors get caught faster. Ideas compound faster. A huge part of what looks like technological acceleration is actually the acceleration of coordination.

Then I thought about Mars. If we ever have people living there, what does communication look like? Mars is between 3 and 22 light-minutes away depending on where both planets are in their orbits. One way. Round trip is 6 to 44 minutes minimum. There is no instant messaging. You send something and wait. You cannot have a conversation.

What does that mean for how things actually run? It means Mars cannot wait for Earth's permission to make decisions. If something breaks, you fix it. If something needs governing, you govern it. The physics does not allow you to check in first. Any Mars colony would be politically autonomous not because anyone designed it that way but because a round-trip communication time of up to 44 minutes makes real-time oversight structurally impossible.

And fast communication is not just convenient - it is what enables the coordination that drives innovation. Slow down the feedback loops between your scientific communities and the compounding slows down too. An interplanetary civilization would not just be slower because of travel times. Every loop between planets would have hours of delay baked in. Over time, the branches diverge. They develop differently. They become less the same civilization and more like civilizations that share an origin.

I tried to think around the speed of light limit. Quantum entanglement came to mind - particles that seem to influence each other instantly across any distance. But entanglement cannot transmit information faster than light. The correlation exists but you cannot use it to send a message. The speed of light is not a technology problem. It is the actual structure of the universe.

So I started thinking about what this means at the scale of a galaxy. If a civilization spreads across even a modest volume of space, communication delays grow from minutes to years to centuries depending on the distances. There is no unified civilization at that point. There are branches. Each branch adapts to its local conditions. Each branch develops its own institutions, its own technology path, its own culture. The original shared identity dissolves over centuries.

This reframed the Fermi paradox for me. The question is usually framed as: if intelligent life is common, where is everyone? One answer is that life is rare. Another is that civilizations destroy themselves. But there is a third possibility that the physics suggests: there is no "everyone." There is no unified galactic civilization broadcasting signals. Any species that spreads across large distances gets fragmented by communication delay into independent branches that diverge until they barely share anything. The universe might be full of intelligence and still appear silent because there is no coordinated "they" to make noise.

The Silurian Hypothesis pushes this further. It is a thought experiment asking whether an industrial civilization on Earth millions of years ago would leave any detectable traces today. The answer is probably very few. Geological processes recycle surface structures over millions of years. An entire technological civilization might compress into a thin isotopic anomaly in one rock layer. We are not looking for it. We would not know what to look for. The absence of evidence is not the same as evidence of absence - and the timescales involved are long enough that this matters.

I do not know whether intelligent life is common or rare. But I think the more interesting question is not how often it starts. It is what physics does to it once it exists. And the answer seems to be: it fragments it. Isolates it. Turns unity into divergence over long enough timescales. Whatever advanced civilization looks like at the Kardashev scale, I do not think it looks like a coordinated empire. It probably looks like thousands of independent experiments that share a distant common ancestor and have long since stopped being the same thing.