Ahh, the good old simulation argument: http://www.simulation-argument.com/ http://www.simulation-argument.com/ The paper (linked above) is a 'must-read', IMHO,

Ahh, the good old simulation argument: http://www.simulation-argument.com/ http://www.simulation-argument.com/ The paper (linked above) is a 'must-read', IMHO, and moderately-easily understandable.