All of us are aware of the passing of time. We’ve felt it in the changing of the seasons, the rhythms of song and dance, our kids growing up and getting older. Like it or not, time is a fundamental part of life. And over the millennia, scientists have generally regarded time as a one-dimensional thing, an arrow that keeps moving forward, never backward. But the closer we look at time, the more complicated and mysterious it gets. Scientists today are divided over whether time or our experience of it at least, is real or illusory. Perhaps we’re not really moving through time. Perhaps the present, past, and future are all equally real.
