You wish.
Frazier that being threatened with being charged with being an accessory to the murder. By transporting the assassin and the rifle contained within a bag. This went on for many hours and was still going on at 11:30 pm.
Given this pressure, it is natural that Frazier would:
1. State the bag he saw with Oswald was too short to hold the rifle.
2. State that the bag he saw with Oswald bag was too flimsy to hold the rifle.
3. State that the bag presented to him, which was long enough and not too flimsy, was not the bag he saw Oswald with.
So, without any evidence for it, you are basically accusing Frazier of purposely outright lying about the size and nature of the bag....
That's a far cry from saying that Frazier wasn't paying attention and was simply mistaken.... but if that's the way you want to go....
Btw, for what it's worth, Lt Day clearly believed him, because on 11/29/63 Day was still developing his flawed theory that Oswald could have used the flimsy bag to conceal the heavy bag in which he carried the rifle....
Given the pressure put on Frazier to confess, would it not be natural for Frazier to convince himself of this? If any of claims 1, 2 or 3 are true, the charges of the state against Frazier collapses.
So, Frazier convinced himself that his lies are actually true, thus beating the polygraph.... Is that what you are saying?
Your airily claim that Frazier would not have known about the significance of the bag at 11:30 pm is false. He had already been questioned about it for hours and strongly urged to sign a written confession. Of course, he knew the significance of the bag presented to him at 11:30 pm.
The first question to be answered of course is; when exactly did Frazier give and sign the affidavit? Was it prior to him being polygraphed or after it?
Since when is it police procedure to let a potential suspect first give an affidavit and only then, maybe for the fun of it, apply pressure on him by having him polygraphed?
Secondly, the affidavit clearly shows that Frazier must have been questioned about the events of the day, including the bag, by then, but there is nothing in the affidavit that would suggest that he was made aware why the police was so interested in that bag. It's not normal procedure for police to volunteer information to potential suspects, is it?