AMMDI is an open-notebook hypertext writing experiment, authored by Mike Travers aka mtraven. It's a work in progress and some parts are more polished than others. Comments welcome! More.
Maybe we are an unexecuted program, the computer hasn't been turned on, but since the logical structure is the same...that is Tegmarkian (see Mathematical Universe ). Or a posible program that hasn't even been thought of yet (Platonism?). See simulation hypothesis
The idea that the world we live in is a simulation running on a very large computer, implicitly in an outer and "more real" world.
In some sense any kind of determinist, monist, physicalist metaphysics is also a simulation theory. That is, if the cosmos is rule-driven, those rules might be "real" or they might be simulated on a large computer, and as denizens of the cosmos we wouldn't be able to tell the difference, at a deep level there might not be any difference.
I have a deep and somewhat anti-intellectual feeling that there is something wrong with all such theories. They contradict our sense of lived experience. Or not contradict exactly, but they place themselves outside of it. I don't trust that move. It is the ultimate in disembodiment.