So what is life for you, Is it a dream?

When you see the advancement of something like video games

You can see a video game that's photo-realistic and millions of people playing simultaneously

If you extrapolate that out into the future, with any rate of progress at all

Then eventually those games will be indistinguishable from reality

You will not be able to tell the difference between

That game, and reality as we know it

And then, how do we know that that didn't happen in the past?

And that we're not, in one of those games ourselves?