Holy unsubstantiated quotes, Batman!

Not at all, Boy Wonder! They truly exist in the Warren Report.

So Connally shot Kennedy in the throat, or was it the driver? Where did that bullet go and the one from the back? I know! Jackie stabbed him with an icecicle while poor poor Oswald was selling flowers on a corner in Oakcliff to earn enough money to go see a movie but he couldn't make enough so the poor man was forced to sneak into the theater where the evil gestapolice came and dragged him away while he was singing Kumbiya. Gotcha.

Nah, Oswald was the lone nut assassin. He must have been ecstatic to see the limo slow to a crawl so he could hit the President and Governor in one shot. But wait - he got even luckier! After firing off a couple of shots, the limo driver slowed down even more - nearly to a stop! He and his front seat passenger kept looking back and staring at the President. Hmm...they must have just been really curious to see why he wasn't waving at the crowd and smiling anymore! He was just grimacing and clutching his throat! What's he doing that for?

Limo driver:

"Hey, I think I hear fireworks!"..(turns head back).."How's it going, Mr. President? You OK back there? You look a little pale...". (keeps staring back)......(turns head forward, keeps riding brakes)....(turns head back again)...."Governor, why are you doubled over? Getting car sick or something?".....(keeps staring back)....."Turn that frown upside down, Mr. President! Want a lozenge for your sore throat?".....(keeps staring back).....

You know, it all makes perfect sense now!

So once somebody says something on the spot they are not allowed to change that, ever?

Sure, but the credibility factor lowers somewhat when you change your story in the very next sentence....