So presentation A can be about publication B. Ordinarily, this wouldn't make sense, because A could just point to the presentation of publication B - but many presentations are about Rand's essays that don't have a presentation.
So those could be added as publications, and then presentations about them could point to the publication, without having to link to it directly in the description - and then worry about all those potentially dead links buried in text.
So presentation A can be about publication B. Ordinarily, this wouldn't make sense, because A could just point to the presentation of publication B - but many presentations are about Rand's essays that don't have a presentation.
So those could be added as publications, and then presentations about them could point to the publication, without having to link to it directly in the description - and then worry about all those potentially dead links buried in text.
It's a narrow issue, but probably worth it.