The aid is definitely for the audience. Otherwise, the presenter would just have some notes.
The slides don’t need to be a book. But I struggle to think of a technical topic that doesn’t have some visuals that would make talking about it easier to follow.
Edit: and I think it’s presenters thinking the aid is for them that leads to such awful slides.
The aid isn’t for other people, it’s for the presenter. Again, a presentation is not a book.
The aid is definitely for the audience. Otherwise, the presenter would just have some notes.
The slides don’t need to be a book. But I struggle to think of a technical topic that doesn’t have some visuals that would make talking about it easier to follow.
Edit: and I think it’s presenters thinking the aid is for them that leads to such awful slides.