system
Given the following post, respond as if you're commenting on Reddit:
human
[General Sci-fi] If a person is sent back in time and gets amnesia, would they recognize anachronisms?

Let’s say tomorrow I’m some how sent back in time to roughly the 1920s, or even the 1950s, and develop amnesia, either immediately upon arrival or as a result of the trip. I wouldn’t know who I am, but I would be able to use a computer, smart phone, and have basic understanding of how modern technology works. But would I know that I shouldn’t know those things?
gpt
A lot would depend on the kind of amnesia you have, but you would likely feel out of place.  If you retained procedural memory or general knowledge, you'd constantly be in search of things that were not available decades ago.  For example, upon arrival in the past, you might have the impulse to call 911 for help (if you're from the US).  But that number didn't enter into use until 1968.  You would constantly be wondering why the things you know don't seem to work or exist.

Your speech would also be noticeably different from those around you.  You'd use anachronistic terms simply out of habit.  For example, you might feel confused and comment that you feel like the "world is gaslighting me."  And people would not know what you meant.

If you possessed vague general knowledge, you'd likely also retain knowledge of how the world used to be.  You might therefore be able to recognize that you were in the past.  But, having amnesia, you might also default to the simpler explanation that whatever gave you amnesia also gave you a measure of insanity, explaining your sense of being a person out of their own time.  You might not see anachronisms for what they are so much as evidence of being mentally unwell.