Here's a novice question... Assuming we accept the yo-yo model of the continually expanding and contracting universe, can we know whether the universe is currently expanding or contracting? Maybe I've missed the point, but I assume that when a contraction occurs, time (along with space) moves backwards? Surely if it were contracting, we would only see it contracting by viewing it from the perception of someone moving FORWARD in time? I mean wouldn't we see a contracting universe just as we see one moving forward? Only spacetime would be contracting rather than expanding? Maybe I'm talking utter drivel but if someone could enlighten me a bit on this whole affair I'd be very grateful! Cheers!