Okay, so what do you think NOW?

[Galadriel55]

Originally Posted by Eönwë

In the EE, we get a deeper view of Aragorn, including a bit of the Houses of Healing. But I agree, there is not as much of it as there would be if the films were faithful to the books.

We barely see the Houses, much less what exactly goes on in them. And I don't think we ever find out that athelas only releases it's full healing power when Aragorn holds it in the movies. So viewers don't know about this special connection and ability.