system
Given the following post, respond as if you're commenting on Reddit:
human
What is the cause of a photographic memory?

I was wondering the other night, what causes extraordinary memory? Is it a genetic trait, or is it developed as an infant by external stimulus. If the latter is the cause, what could a parent do to improve the odds of their child developing superior memory recollection skills?
gpt
The existence of true photographic (eidetic) memory is controversial, and it is not at all apparent that it actually exists outside of legend and hoax. See the Wikipedia page on the controversy surrounding it for an overview.