DO NOT CONFUSE THE PAST WITH YOUR MEMORY OF THE PAST.
The past is a realm you will never directly experience. Your memory of the past is possibly just a neurochemical reaction.
Is it important to keep in mind that your best evidence that the past happened or exists relies on a frighteningly fragile series of molecular interactions? This may remind you that the world is meaningless. This may also remind you that you know how to generate meaning and beauty from pure randomness.
For reasons that are not understood you have the ability to use available materials to imprint available experiences.
This is most literally done with screen printing.