I would be a bit more optimistic, here is my take on it. Hitchhikers guide to the galaxy: Earth - a small planet in the outer reaches of spiral galaxy M7529.

I would be a bit more optimistic, here is my take on it. Hitchhikers guide to the galaxy: Earth - a small planet in the outer reaches of spiral galaxy M7529. Inhabitants with watery brains came up with technology to use their star energy directly for complex mathematical calculations. Our space archeologists still don't understand why the calculations were producing random outputs so they never managed to get out of their star system and used all their star energy for that. Their Dyson sphere is interesting place to visit because as of now, it is the only civilization that achieved building it and never managed to go any further.