The meaning is brought forward in the Matrix by the following dialogue (kindly excuse the inaccuracies):
In that world, everything, EVERYTHING, is a myth, an illusion, "You've been living in a dreamworld Neo."
In this world, while a lot of people need to, want to, think that what they see, what they feel, taste, touch are just electrical signals to their brains, it doesn't help them, because they're never rescued.
There is a couple of other important dialogues that I want to quote before I bring this post to its conclusion:
and,
The first is a commentary on what everyone lacks when they say that it's all "maya". Everyone seems to think that they can dodge bullets. What they really need to do is to deal with them.
The second is about cool. That statement is just so "in your face" cool that I become completely speechless (also, in other words, I don't know what it means). Somewhere it reminds me of what all the rockers at Woodstock '69 were trying to do.
There's more philosophy to come. Rukavat ke liye khed hai (I regret the interruption).