As I mentioned, a lot of the dramatic tension is provided by the fact that Theodore’s love interest does not have a body. But this is an unrealistic notion. It would be technically trivial in the future to provide her a virtual visual presence to match her virtual auditory presence, using, lens-mounted displays, for example, that display images onto Theodore’s retinas.
Hint: not being able to see Samantha isn’t going to present the biggest problem in their relationship.
