Lacking in novelty, our minds compress memory. Best explanation I’ve heard, and it’s seemed true… years where I am not doing very much, it’s just a few surface memories unless I dig. But years where I am busy as hell, it’s like being overrun with memories thinking of those times. As we get older, we experience less novelty. Living in a cube, living in a rut, yes that’ll make time slide by like nothing else. Avoid it at all costs.