The waking self is a phenomenon of duration as defined by the immediate short-term memory. Such durations come in successive blocks, woven together by another indirect form of memory. Blocks may be long or short, comparatively, depending on physical and emotional circumstances. The immediate short-term memory functions in a way that is akin to compression of movie files, that is, there is a key-frame after which the succeeding moments are taken according to their difference from this frame and each other. When the differences have accumulated beyond a certain point a new key-frame is brought forth. The subjective self belongs to a bock and is recreated entirely with each new block. Since experiencing belongs to such a self, not experiencing endures for longer than its corresponding portion of immediate memory. All the rest is interpretation and interpolation.