“reality” is an ongoing construct. It is well known that a good deal of your perceived reality is actually re-perception of something that you saw before. As long as it is there every time you need to see it - it exists.
There is a fascinating experiment where they switch up what is in your visual field (out of the foveal area) and oddly enough, most people don’t notice the change. This has been done with both computer imagery and in actual physical settings.
Our mental functioning has evolved around the concept that reality is relatively stable so things that don’t change are not memorized internally.
I found this Amazing Color Changing Card Trick video very cool: