There is some discussion in science about us already being in such a world, and how it could be observed. This is a radio clip from the BBC briefly outlining

There is some discussion in science about us already being in such a world, and how it could be observed. This is a radio clip from the BBC briefly outlining work that is already being done to test the theory. It requires build simulators of the real world and bizarrely requires a "matrix" to hang our reality on to "correct" it to be in line with things like Einstein's relativity. All very spooky... http://news.bbc.co.uk/today/hi/today/newsid_9763000/9763772.stm http://news.bbc.co.uk/today/hi/today/newsid_9763000/9763772....