I don't see how you can conclude that - UNLESS you buy into all the conspiracy theory bullcrap ...
It looks, to my trained eye, that 1) they apprehended the guilty party *that* day 2) the Warren Commission provided ample material to allow motive to be established 3) WE HAVE ear witnesses who placed one very-well known set of shots at the TSBD that can be 4) traced to one verifiable bullet back in the TSBD building and 5) NOTHING exists outside this sphere which is CREDIBLE that holds the kind of water that Oswald-as-the-lone-shooter does.
Innuendo, hyperbole, wishful thinking and desire for good book sales notwithstanding.
WE EVEN find out that THE GRASSY KNOLL angle has been a 'ruse' by conspiracy theorists since about 1964 ...
As the title of Gearlad Posner's book puts it: "Case Closed."
(WE won't discuss whether you've read one of the (used to be) *distribution limited* copies of the Warren Commission report.)
Why are you so vehemently in defense of your position? Your posts or way too emotional for objective thought.
The "Oswald was the only shooter theory bullcrap" that you buy into.....I made my point much earlier. You can not possibly know what really happened thanks to the obvious coverup, mishandled evidence, and altered evidence. Case closed.