simulation argument

Is this a simulated reality?

The simulation argument, claimed by the philosopher Nick Bostrom, investigates the possibility that we may be living in a simulation. The argument attempts to prove the disjunction of three hypotheses (that is, that at least one of the following three propositions must be true), that:

either

• the human race will never reach a level of technology where we can run simulations of reality so detailed they can be mistaken for reality; or
• races who do reach such a level do not tend to run such simulations; or
• we are almost certainly living in such a simulation.

-- http://en.wikipedia.org/wiki/Simulated_reality