**Undeleted but still closed.**

Please consider reopening the following question:

[In what sense is $\Bbb R(x)$ an "instantiation" of the hyperreals?](https://math.stackexchange.com/q/4454100/104041)

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.