Read this:Reynard wrote: ↑Tue Jul 17, 2018 12:53 amSo they have the ability to extinguish stars without causing an immediate gravitational collapse creating a singularity?! Also they can manipulate the orbital physics of the other star(s) so the loss of the delicate gravitational balance doesn't send the stars winging off into the void? That's science definitely bordering on magic.
No singularity is involved.
This ringworld is in some vague period I call "the future" it is approximately between 10,000 AD and 1,000,000 AD.
Probably something less than a million years is sufficient to accomplish the task of taking apart a star. A ringworld has the surface area of 3 million Earth's, the Stationary ring I talk about has more than that, and it has the entire substance of the taken apart Alpha Centauri B to use as fuel, to power its fusion reactors, and it can consume this fuel at whatever rate is convenient, the energy is used to stabilize the ringworld around the central star, and also to run a partial Matrioshka Brain, a full sized brain would have the surface area of one billion Earths if at a 1 AU distance from a star, and you don't really need an Earth's worth of surface area to simulate an Earth sized planet, it all comes down to the number of sophonts you are simulating, if there is not a pair of intelligent eyes in that part of the simulation space, you don't really need to get down to atomic level detail, statistical modeling can be used instead. The surface area of the stationary ring is probably in excess of 3 million Earth's and it can simulate more than 3 million inhabited planets at a minimum, and they all don't have to share the same simulated universe either. If you wanted to simulate present day Earth in this partial Matrioshka Brain you could with hardly any extra resources than you used to simulate Charted Space. You could simulate the Earth from many different past eras, and it could open up gates all over the surface of the ringworld and download all sorts of things and people from those simulations using spare atoms it has in storage. Now if a gate opened up from our present day Earth, or a simulation of it, what would we modern Earthers do if we could step out onto the surface of this ringworld? Lets say for instance a 3 meter wide diameter gate opened up over a water fountain in Central Park?
Central Park, New York City, and all the residents thereof would all be part of the simulation, until they stepped through and became real. There memories would be real, as their brains would now be made up of real atoms instead of simulated ones.