system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do photographic memories work?

Like wouldn't your mind be cluttered with memories that you don't want to think about, or do you just remember more memories than others.
gpt
Photographic memories have never been demonstrated to exist.  The term you are looking for is eidetic memory.  Hopefully someone will chime in w/ the specifics of that.    

Edit: Since nobody is coming along to answer this.  Eidetic memory is still open to debate and study. It typically occurs in children and then goes away as they age. It is simply the ability to remember in great detail with little exposure to the material.  For example they might recall a license plate they only saw briefly, last Tuesday, and also tell you the color of the shirt the driver had on.  It has never been linked to IQ or any other trait. In rare instances adults have this ability.  

We should probably also discuss savants.  These are individuals with highly specialized extreme skills. For example you could flash a deck of cards to an individual, and they could then stack  the deck in that order. Typically a savant will have one skill extreme skill but be poor at many typical skills.

So why don't their brains clog up, or any brain for that matter?  Well for starters we can store a really incredible amount of information.  Most estimates put that amount of information over 10 terabytes. We also prune our memories when we sleep.  Have you ever wondered why you can't recall what you wore ten years ago on Tuesday?  During sleep the brain decides what is useful info, and what isn't.  It doesn't all just sit up there forever.  New connections are made to frequently used and reinforced information.  Old connections wither and die along w/ the information they hold.  

For a total mind fuck enjoy this.  Your brain prunes at night. If there isn't a soul and we are completely a product of the brain: You don't have any good proof you are the same person you were yesterday. Sure you have the memories of that person, but no way of knowing you are the same person.  In all likelihood you aren't.  Everyday you are a new person w/ the memories of the last person to take your body for a ride.