I understand that filmmakers needed to distinguish visually between humans and elves but now everyone, even many readers think that that's they way Tolkien's elves were (reinforced by the images of elves in the popular culture).
Don't they think that such a prominent feature should have been well known, especially in the First Age? Or in Númenor while they were still friendly with elves? Or during the Last Alliance? How could have anyone taken some of the Edain or Numenoreans for elves then? And what about the half-elven? Do their ears just change their shape when they choose their fate?

Or imagine Faramir looking at Frodo and Sam and saying:
“Elves do not walk in Ithilien in these days. And Elves are wondrous fair to look upon, or so “tis said, and they have pointy ears.”
