If one is unable to feel emotion X, then:

1. One has some ulterior motive for faking it.

2. One’s actions will likely diverge from emotion X. (Eventually)

If everybody believe the same lie, then it could be indistinguishable from the truth. (Until, the nature of the lie/truth become clear)

Or their ulterior motive is that they don't have one and want to fit in? Meaning they would never diverge?

Didn't realize my point was so philisophical lol