This concept was probably made most popular by the movie The Matrix. I have had this thought many times before and the more I think about it the more it seems like a possibility - its very surreal. "The idea that life, the universe and everything in it could be an illusion dates back more than 2,000 years. Chuang Tzu, the Chinese philosopher, who died in 295BC, wondered whether his entire life might be no more than a dream." Read the full article from TimesOnline here. What We Still Don't Know - Are We Real? Documentary on Youtube
I've heard it before... It is very depressing thought. Nick Bostrom, a british scientist had published a few research papers suggesting we may, infact, be just a computer simulation run by an advanced alien race. Just like The Sims II or Second Life, but only on a very large scale, and sufficiently powerful computers... Are You Living in a Computer Simulation? Check it out...
Well, in this case, I can only hope their hard disk don't crash or if they are using Windows, no Blue Screen please!
Nay, these aliens could be smart enough to use Solid State Devices for storage and a stable version of Unix with plenty of RAM... lol...
And I think we are just a bunch of micro organism on marbles that some kid was playing with He is taking an aim right now and He is going to hit another marble right on the one we are living.