Every person stores hyper-resolution holographic memories of every cognition event throughout their entire life. Only very few have the means to willfully access them. Even when one cannot, low level “sub-conscious” activities will relate to these memories through background processing.

This is why memories will emerge through associations, or new insights will develop by details without cognizant awareness (association with memories which may be willfully accessed.)

The modern understanding of the mind (and memory) is completely inadequate.