Undeleted but still closed.
Please consider reopening the following question:
In what sense is $\Bbb R(x)$ an "instantiation" of the hyperreals?
It seems to have been closed simply because $\Bbb R(x)$ is not an "instantiation" of hyperreal numbers in the strict sense of the word, rather than there being an issue with the question itself.
It was deleted by a bot.
It has, in the past, been undeleted and reopened; I made a case for it that goes something like this:
The question has been answered in error by a well-established & respected user, only to have that answer deleted as incorrect. Surely, then, there is enough of a misunderstanding about hyperreal numbers for there to be a need for the question.
The proposed duplicate doesn't mention $\Bbb R(x)$. Since the video in question makes the analogy between $\Bbb R(x)$ and hyperreal numbers, there must be some sense in the analogy, right? This needs addressing and the duplicate does not do so.
It has context. I put a lot of effort into the question and I believe it shows.
In the comments on the question, there is a link to a valuable chat discussion on hyperreals.
A particular user has agreed to answer the question if it is reopened again.