"Such a "match," even if identified, would only allow me the illusion of communication and you the illusion of understanding. I could claim, for example, that my first memory was the taste of an unripe banana, and many in the world would nod their heads, familiar with this unpleasantness. But we all haven't tasted the same unripe fruit. In order to feed not so alone in the world, we blur the lines of our subjective memories, and we say to one another, "I know exactly what you mean!"