I think that Arnold Rowland’s associations of the radioed positions of the motorcade with the timing of his sightings appear, for the most part, pretty accurate.
"Pretty accurate"? LOL. They were extraordinarily accurate. Even Mr. Bugliosi (or whoever wrote that portion of his book) acknowledged this.
So your theory is that the guy who showcases brilliant memory about even the tiniest verifiable details bizarrely turns into a fantasist/hallucinator/liar when it comes to the 'elderly Negro'.
And why do you put forward this ridiculous theory, Mr. Collins? One reason and one reason alone: because the Warren Report tells you to. And we all know why you're here: to defend the Warren Report version of events at all costs, even if it means debasing your own intellectual and ethical dignity (as you have been doing here on the Rowland issue).
Was Mrs. Rowland asked whether Mr. Rowland ever talked to her about all the other non-rifle-holding people he remembered in the area that day? And if her answer had been no, what significance should be given to that circumstance? Answer: none. Mr. Rowland's big preoccupation-------------not unreasonably-------------was with the man with the rifle whom he had seen.