The jiva, the individual soul, or what you experience with, is the entire life, that peculiar four-dimensional sausage that popular science sometimes speaks of. As we experience it, life is always a limited portion of flowing time, we are aware that the proximal region of relevance - grounded on sensory experience of the present subject and its location in a world -  recedes away into twilight, dream, unconsciousness at either end. Our 'delta T' is not a step function but something like a bell-curve, asymmetric, of varying width and with long tails (Could there be some sort of Fourier-like transform involved? Certainly somewhere...) It may have a peculiarly multi-dimensional character with regard to the past which often seems more active than a mere fading impression or echo - but surely these other dimensions are in the frequency domain rather than the time domain. At any rate the two canonical points where this thickly stranded flow comes into contact with timelessness are birth and death. Assume that both of these are respectively explosive and implosive events, singularities which transmit a sort of background radiation forwards and backwards over the entire extent of life. They must do this by virtue of their timelessness, as they connect equally with every point in time - or as a singularity in the time domain transforms to a smooth distribution in the frequency domain, the signature of a soul, its true, but not original, face.