Wait. If we are an algorithm, then it is repeatable, yes? Suppose we have something like a StarTrek food generator, but for us, brain, wetware, everything that occupies physical space, and then apply the algorithm. Are you sure that will duplicate yourself? Your memories, how you walk, your predilection to turn left, and reach for something yellow? (all made-up examples, of course). That a stroke can alter personalities and choices, or put memories out of reach, all in the same body, makes me think that there is something more than an algorithm that ties the whole together, I don't know if it's consciousness, but I lack a better word.