In earlier columns, I have defended time from the assaults of physics. With a few exceptions, physicists have not been kind to time. Relativity theory stripped it of its tenses, dismissing the difference between past, present, and future as illusory. Worse, the theory seemed to deny time an independent existence. As Herman Minkowski put it, “space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union will preserve an independent reality” (The Principle of Relativity, 1952). Time in physics is present as an abstraction, a pure quantity: little t. This can be parked under a line as a denominator (eg, speed = distance/t), or multiplied by itself, or by the square root of -1 – indignities that real stretches of…
