@Fisherman. You have just made a huge contradiction here. You need to re-read your submission, in one breath you are saying you believe, then in another you doubt whether this is true?
No, I have not. There is a gap between knowing and believing. Knowing requires some measurement of the evidence or witnessing of an event (you know for a fact) Belief is a conclusion, for example, eyewitness testimony about an event is knowledge versus those hearing the testimony and forming an opinion is belief. The later cannot swear they know such event to be true -only that they believe it is true. If you ever find yourself signing a Deposition or any other sworn statement, you will see the distinction made in the document.