What makes memories feel so real is that the neurobiological process of recollecting an experience is in some ways identical to the process of experiencing it in the first place.

Several of the most fascinating biopsychology research questions about memory have to do with the connection between human consciousness and the location in the brain and function of memory processes. What makes memories feel so real is that the neurobiological process of recollecting an experience is in some ways identical to the process of experiencing it in the first place.
After viewing the two videos below, imagine what it would be like if your memory only had a 30 second maximum capacity; that is, if in a half-minute or less you forgot everything you just experienced, including information received from your environment and its accompanying feelings? What do imagine your greatest challenges in everyday living would be? What about positives? If you had to come up with some what would they be?
Learning & Memory
Clive Wearing – The Man with No Short-term Memory.https://www.bbc.com/news/magazine-15791973