Marx's problem was that he thought of everything in terms of class. If I'm poor, and I know I'm poor, but I also think about something other than class when making political decisions (no matter what that "something" is), then I have "false consciousness". That is, if I don't think about this totally the way Marx says, I'm stupid. Nice.
If you think about your life that one-dimensionally, you're poor in a way that Marxism can't fix.
If you think about your life that one-dimensionally, you're poor in a way that Marxism can't fix.