Mike Jay writes:
Memory creates our identity, but it also exposes the illusion of a coherent self: a memory is not a thing but an act that alters and rearranges even as it retrieves. Although some of its operations can be trained to an astonishing pitch, most take place autonomously, beyond the reach of the conscious mind. As we age, it distorts and foreshortens: present experience becomes harder to impress on the mind, and the long-forgotten past seems to draw closer; University Challenge gets easier, remembering what you came downstairs for gets harder. Yet if we were somehow to freeze our memory at the youthful peak of its powers, around our late twenties, we would not create a polished version of ourselves analogous to a youthful body, but an early, scrappy draft composed of childhood memories and school-learning, barely recognisable to our older selves.