The Future is an illusion because, at the most fundamental level, Choice is an illusion. I am a believer in the theory, popular among physicists, that every time there is a Choice, the universe splits: both choices come to pass, but in now-separate universes. And so on, and on, with every choice of every particle, every atom, every molecule, every cell, every being, coming into being. In this universe of universes, everything happens, and every combination of things happens. Our universe is a mote of dust in an ever-growing dust-storm of possibilities, but each mote of dust in that storm is generating its own dust-storm of possibilities every instant, the motes of which in turn... But you get the general impression. Indeed to think of ourselves as single selves, and our universe as a single universe, is to be blinded, by the limitations of our senses and our consciousness, to the infinite-faceted truth: that we are infinite in a universe of universes that are each infinitely infinite...""An intriguingly intricate view of the world," I said (...)Pat Sheeran nodded. "And it is astonishing how little practical difference it makes," he said. "All my other lives are as inaccessible to me as if they did not exist at all. No doubt in other universes I am a beggar, a revolutionary thinker, an academic, an accountant; a drinker, a thinker, a writer of books; I lose a freckle, gain a mole, shade off into men nothing like me at all; I have sons, fire guns, live forever, die too young. Whenever any particle in this universe changes state, I am split and travel in both directions, multiplied. But here I am, suffering the illusion of unity in this endlessly bifurcating moment.Yet sometimes, I wave my arms for the joy of creating a spray of universes."I said startled at the implications, “Though it may make no practical difference, the implications are nonetheless startling.""Indeed," said Pat Sheeran. "I had immediately to file all the fiction on my shelves under Non-Fiction. For it is an unavoidable corollary of this theory, that Fiction is impossible. For all novels are true histories of worlds as real as ours, but which we cannot see. All stories are possible, all histories have happened. I, billion-bodied, live a trillion lives every quantum instant. Those trillion lives branch out, a quintillion times a second, as every particle in every atom in each mote of dust on land, in sea, and sky, and space, and star, flickering in and out of being in the void, hesitates and decides its next stage. All tragedies, all triumphs, are mine, are yours.""It is a curious and difficult thing, to think that all is possible. No, probable. No, certain," I said, attempting to grasp the largeness of the thought."That nothing is improbable.""It is a comforting thought, some nights, to this version of me, now," said Pat Sheeran, and we roared on.