Background: Some time ago, it was recommended that I read the book Anathem by Neal Stephenson. Since then I have read several others and reread this, my favorite by far.
The central concepts of the book are philosophy, and I was introduced to a number of very interesting concepts. Because, however, the book does not take place in our universe, it has some oddities. Largely, this is a difference in jargon, which is almost immediately labeled arbitrary at the beginning of the book. But the real problem is the names of the philosophers.
In the book, the analog of Pythagoras is Adrakhones, and many, many others are mentioned. But because the book's perspective is so flawlessly separate from our world, and because I'm just slowly picking up data about Philosophy as I go along, I cannot name but a few analogs.
So, one of the questions posed by one of the characters was to do with communicating with an alien. The alien can perceive a region of space in some non-visual manner. After assuming that communication was possible, the characters discussed how one might explain that one person is in a specific location, that said person has sides you cannot see, and even the incredible ability humans have to see a thing separately and yet recognize it as the same thing.
Who in the history of philosophy posed these questions regarding multiple observers coming to a consensus on the identity of an object?
Caveat:Given the nature of the book, I can only assume that this has been written about by some likely prominent philosopher in the past. Partly because of the book's terminology, I don't know how to search for it effectively.
I realize that to someone with a really good grasp of the subject matter, this book could be hard to read because of either the terminology or the parts which make it fiction. I just read part of a massive scathing review of everything in the book which primarily complained that Stephenson is trying to get everyone to see reality the way he does. Happily accepting the book as fiction, I still want to know more about some of it's influences.