Is it possible for a Self Reference to return "Is Not Valid"?

If I link a Self Reference to an IsValid Node, is it possible for it to return “Is Not Valid”?

It already “Is Not Valid” if the **false **value is returned.

a self reference cannot return not valid.
If it would, the object (self) would not exist, which is not possible

Thank you, I was just double checking to see if I should bother with IsValid checks for Nodes using a Self Reference.