Some people have great memories. Some people have horrible memories. There are even people with hyperthymesia who remember everything. I was told that anybody can have a good memory if they practice method of loci and that people that have “better” memories don’t have more storage space; just a better organization. Recently I discovered a factoid that each connection between a dendritic branch and an axon encodes one memory. I don’t have an official source for that but since the human brain has 86 billion neurons and there are 5-7 dendrites so logically there should be space for 602,000,000,000 memories. Yet it still doesn’t make sense. How can a memory of being afraid at your first scary movie equate with your memory of the Bill of Rights? I just don’t know what to think anymore. Does everyone have varying storage space sizes and you just have the luck of the draw if your memory pool is “bigger”?
Sources: https://www.frontiersin.org/articles/10.3389/fncir.2016.00023/full
https://www.albany.edu/faculty/cafrye/apsy601/Ch.02cellsofthenervoussystem.html