The number one crime in any age: offending the money. — Charles Stross

Our Creators reverted to this state—they slid sideways into the cultural stasis—at a point where their population was shrinking and aging. The late twenty-first and early twenty-second centuries were not good times for them: Economic deflation, ecosystem failure, wars, resource depletion, and the end of the western Enlightenment program of the natural sciences coincided poisonously with the availability of cheap slaves to serve their every need, and the near perfection of entertainment media to distract them from the wreckage of their once-beautiful world.

Let me give you a handle on that. Say the distance between the Earth and the sun is, oh, one centimeter. Mercury orbits the sun at a range of a toasty two millimeters. Jupiter is six centimeters out; the span of your outstretched arms, fingertip to fingertip, will just about encompass the orbit of Eris, which it’s taken me so many years to reach. Got that?

Well, on this scale, Proxima Centauri, our nearest star, is two and a half kilometers down the road. And we’re going to Tau Ceti, three times as far away as that.

See? Interstellar colonization is easy! You just need to devote a visible percentage of the resource of an entire interplanetary civilization to it for several hundred years, placing it in the tireless and efficient hands of robots ordered to strive for the goal for as long as it takes.