But why choose Jarman? Why not Roy Truly or Wesley Frazier who would more likely have been expected to be witnesses?
If Lee was such a smart criminal that he was manufacturing Doubt before committing the crime, why did he allegedly do dumb stuff like walk around with an Identification Card that linked him to the purchase of the rifle?
It seems that some try to have it both ways with Oswald. One minute, he?s a deranged and irrational guy who is unable to hide his animosity towards Gen Edwin Walker from his family and friends. The next minute, he?s a manipulative and clever criminal who deliberately avoided giving any hints that he disliked JFK or wanted to harm the President.
I don't know why Oswald chose Jarman. Maybe because he was there. Choosing Frazier would have been taking too much of a chance, IMO. Frazier was the guy who you wouldn't want to raise the level of curiosity that just might put two and two together. Hmmmm.., long parcel, changing normal routine, President motorcade passing just in front of the building.
I believe Oswald was a desperate, but not necessarily an intelligent, criminal. When Oswald asked Junior about the commotion outside to pretend he was unaware of the Presidential motorcade passing in front of the TSBD it's possible he was trying to dissuade suspicions about his whereabouts when he took aim and fired at JFK.
I don't believe Oswald told anybody that he planned to shot Walker. It was only after the deed was done that he told Marina and months later went with Michael Paine to a meeting of some kind were Walker was discussed. As to Oswald deciding to shoot JFK I believe Oswald's fight with Marina about signing O. H. Lee in the rooming house and her rejection to his offer to move back together drove him over the cliff.