Sometimes it can simply be a particular scent, or the chance re-emergence of an old song, or the feeling of a gentle late-summer breeze, or the bubbling up of long-buried images in meditation, which re-awakens old memories that were long since filed away and dormant, bringing back whole worlds to the mind's eye that were temporarily forgotten.
And that fragility and economizing of energy and focus of human memory betrays the expanse it is built upon and attempts to traverse: that perpetual slipstream of time and space is so vast. So much can happen in seconds, in minutes, in days and months and years. And there is only so much time and energy to witness it.
