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>Perhaps the universe is silent simply because there's no reason to speak up. Perhaps the interactable bubble of our simulation end long before the next closes
by ryanmercer 8y ago
>Perhaps the universe is silent simply because there's no reason to speak up.
Perhaps the interactable bubble of our simulation end long before the next closest star.
Perhaps other civilizations never even messed with radio transmissions, perhaps they got to fiberoptics before or around the same time and decided to just used wired connections for everything.
Perhaps other civilizations long ago abandoned radio for some other form of transmission that we've yet to even discover, some multi-dimensional/subspace communication or some sort of quantum entanglement or maybe they communicate chemically and can transmit massive amounts of data with particles in the parts per million or billion.
Or maybe their civilizations came and went time and time again spanning billions and billions of years.
I once did some math ( https://www.ryanmercer.com/ryansthoughts/2014/11/30/this-just-in-you-dont-matter https://www.ryanmercer.com/ryansthoughts/2014/11/30/this-jus... ), if we assume 1 sextillion stars in a total of 100 billion galaxies in the universe (likely a quite low figure) and that 1 in 2 of those stars has a body orbiting it that hosts life and that 1 in 2 of those worlds has at least one tool-building species that gives you 250 septillion planets with tool-building life. That gives you an average of 25,000 tool-building worlds per galaxy.
Now let's take our galaxy and let's assume that in the first billion years of our galaxy, there were ZERO tool building species. That leaves you with 12.21 billion years to divide 25,000 civilizations over a galaxy with 100,000-180,000 light year diameter. Let's assume 140,000 light years. That's more than 15,000,000,000 square light years.
That gives us 1 tool building civilization per 600,000 square light years spread out over 12 billion years.
:(
Obviously this figure could be way way lower than in reality. If a species develops space technology they could easily begin to spread. Even if a civilization needed a thousand years to spread to a neighboring star in 10,000 years you could have a presence in 512 star systems, in 20,000 years 524,288 star systems.