The Timeless Way of Building, by Christopher Alexander, 1979, teaches us about form, function, the unforeseen effects of poor choices, and the things that should remain unsaid. We are all builders now, deliberate and often proud contributors to the steady accumulation of sand, light, and code. What we are building is not an archive, nor a soft palace for our memories.
You can begin to describe this environment with words like game engine and interoperability, persistence and latency, dispersion and routing. You should not stop there. What happens after the technical challenge is met, when these inherited and conquered virtual spaces can host the simplicity of everyday life, is the most important part of the blueprint.
The systems we build should be wholesome, devoid of deceit, animated by language. They must be able to transcend time. We should expect company.