Its about cultural evolution, time travel is just the mechanism the writer uses to explore that.

This movie resonates with me because I'm bicultural, and I'm very sensitive to that aspect of human behavior. I relate to the Leslie Howard character in the film because I've spent my whole life jumping back and forth between the two, but I'm a lot better at it than Peter Standish is.

I've also lived long enough and traveled enough to notice how BOTH my cultures have evolved, and I have been able to explore different subcultures within my own home cultures. Its difficult to communicate just how I experience this, but I can certainly feel it happening.

The really scary part of all this is that I have enough time under my belt that I can not only feel the culture changing, I can experience that the speed of that change is accelerating. Its moving so fast now I can feel I am losing the ability to keep up.