Time moves in one direction, memory in another.
If you’re fifteen or so, today, I suspect that you inhabit a sort of endless digital Now, a state of atemporality enabled by our increasingly efficient communal prosthetic memory. I also suspect that you don’t know it, because, as anthropologists tell us, one cannot know one’s own culture.
In effect, I grew up in a sort of timewarp, a place where times are scrambled up. There are elements of my childhood that look to me now, in memory more like the 1940s or the 1950s than the 1960s. Jack [Womack] says that that made us science fiction writers, because we grew up experiencing a kind of time travel.