If you were a space age kid, you'll love this.

[PoindexterOglethorpe]

3. True.

The computer power of Apollo 11 was laughable, compared to what we had not that many years later.

Our cell phones are computers. Just think about what you can do with yours. Okay, so we don't use them to calculate trajectories or stuff like that, but something as basic as texting, let alone checking your email, involves a LOT of computer power that simply didn't exist 50 years ago.

I am wanting to write a science fiction story about a person from our time (2019) who goes back to about 1990 and spends the rest of the story pissing and moaning about not being able to call anyone on a cell phone and no internet connection. Really.

When I read time travel stories (one of my absolutely favorite forms of science fiction, I will have you know) I think about that kind of thing all the time.