No, you have a translation.
>Even if, like the Odyssey, there are hundreds of wildly varying translations?
Precisely why translations are not considered equivalent to the original text.
>What about an abridged copy? What about the Sparknotes version?
An abridged copy is not a copy of the unabridged version.
>If you have a copy of Pride And Prejudice And Zombies, do you have a copy of Pride And Prejudice?
No.
I'm honestly surprised these were the questions you chose to ask, when you could have asked what if you have 90% of the pages, or what if most of the pages are missing pieces because the book was shot with a shotgun, or what if the book was scanned and OCRed and all the "rn"s were replaced with "m"s and all the lower case Ls with ones. Hell, is a scan of the book close enough to having the book, or is it far enough that one can no longer be said to have the book anymore?
If I have a translation of a book, I think I have more of that book than if I had nothing at all. It's fuzzy.
You seem to be arguing that a translation, etc is not literally having the book, which is something that has always been my stance as well.
We just have different opinions about what it means to have a book. I think that having a copy of "Pride and Prejudice and Zombies" is more like having a copy of "Pride and Prejudice", than having no book at all is like having a copy of that book. You disagree and that's fine.
The reverse is not true. Just because someone asks a rhetorical question, does not mean they are using the Socratic method.