What is the truth? Is it some esoteric thing that can only be revealed indirectly? Is there a way to know?
This quote of L. Ron Hubbard from October 1963 gives you a guideline.
“Truth is an all-freeing mechanism. If it is not all-freeing, then the truth, to some degree, must be limited—either limited in its conception or limited in its reception or limited in its application.
“So that you can say that anything you were worried about must have a falsehood connected with it. There is always a lie connected with anything that you are having a hard time with.”
— L. Ron Hubbard
What ramification does this have in relationships, for example? Well, if you’re still arguing about it, there is still something one or both of you haven’t disclosed. If you are concerned about what your kid is really up to, you haven’t gotten down to the bottom line yet. If work is a strain and you don’t know how to get on top of it, you need to observe, and find out more.