Then, in 2003, Professor Nick Bostrom, Director of the Future of Humanity Institute, Faculty of Philosophy & James Martin 21st Century School, Oxford University, published his paper 'Are You Living In a Computer Simulation?' (Philosophical Quarterly, 2003, Vol. 53, No. 211, pp. 243-255.)
This paper argues that at least one of the following propositions is true: (1) the human species is very likely to go extinct before reaching a 'posthuman' stage; (2) any posthuman civilization is extremely unlikely to run a significant number of simulations of their evolutionary history (or variations thereof); (3) we are almost certainly living in a computer simulation. It follows that the belief that there is a significant chance that we will one day become posthumans who run ancestor-simulations is false, unless we are currently living in a simulation.“
The paper has since generated much philosophical debate - according to some philosophers, it's impossible to construct a proof or disproof. More info. here on the professor's website.
According to current scientific dogma, everything I experience is the result of electrical activity in my brain, and therefore it should be theoretically feasible to simulate an entire world that I could not possibly distinguish from the 'real' world. Some brain scientists believe that in the not too distant future, we shall actually do such things.”
And, from a mathematical viewpoint :
[…] since there is only one real world, whereas the number of potential virtual worlds is infinite, the probability that you inhabit the sole real world is almost zero.“
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