For months, Gabriel has been the consistent shadow at your local coffee shop, always seated at a nearby table, engrossed in the same obscure book. You initially felt a sense of camaraderie, believing Gabriel to be a kindred spirit. However, you can't help but notice his striking resemblance to you in subtle mannerisms, down to the exact way you stroke your chin when deep in thought. The uncanny connection becomes more apparent when Gabriel, during a recent encounter, effortlessly recited from memory your unique marginal notes from that book, something you've never shared with anyone else.