Before that why don't you show your evidence that Oswald was certainly the shooter.
Show us were I said he 'certainly' did it.
Perhaps you've missed the 'tongue-in-cheek' flavour of my stated conclusion. In any case, it should be plain to see that I'm certain up to the level of the probability. Which is a step beyond possibility, and just short of claiming certainty.
And you and others have also ignored my oft-stated recognition of the fact that no one here can prove Oswald's guilt or innocence to a dead certainty.