There was a black man on the floor, but BRW did not even remotely resemble the man described by Rowland. Not even close given Arnold's extremely detailed description of a person he did not pay any attention to.
How can Brennan be expected to see someone that was conjured up out of Rowland's imagination? Rowland described in great detail a person that nobody knew, let alone expected to believe it was description of BRW. The better question is how can Rowland look back at the window for the next five minutes and not see the gunman that was seen by six other people? According to Arnold the SE corner of the 6th floor was vacant after the old wrinkled negro departed, as in there was no one was in the window any more.
Mr. SPECTER - Mr. Rowland, a couple of other questions.
Are you able to give us any other type of a description of the Negro gentleman whom you observed in the window we marked "A" with respect to height, weight, age?
Mr. ROWLAND - He was very thin, an elderly gentleman, bald or practically bald, very thin hair if he wasn't bald. Had on a plaid shirt. I think it was red and green, very bright color, that is why I remember it.
Mr. SPECTER - Can you give us an estimate as to age?
Mr. ROWLAND - Fifty; possibly 55 or 60.
Mr. SPECTER - Can you give us an estimate as to height?
Mr. ROWLAND - 5'8", 5'10", in that neighborhood. He was very slender, very thin.
Mr. SPECTER - Can you give us a more definite description as to complexion?
Mr. ROWLAND - Very dark or fairly dark, not real dark compared to some Negroes, but fairly dark. Seemed like his face was either--I can't recall detail but it was either very wrinkled or marked in some way.
Hierarchy of evidence would be, sex, race, build/hair, clothing and age. the main ones right. Just lucky was he? He did his best from memory.
Jack, Williams had gone by about 12.25pm. Only a minute or so after Brennan took up position. He described only 2 men on the 5th floor. This would be correct if Williams had not yet arrived to join them. He could not accurately describe the window they were in during his WC testimony. He recognised only Norman when asked which two he saw. As you know Jarman and Norman opened the windows when they arrived. Rowland correctly described the SE window being opened and two or three men there. He correctly testified that Williams had left the SN by 12.25. I see lots of correct information. How would he have known all this when he testified?
What angle was Rowland on when he observed the building with respect to Brennan and the others? I believe they were all further west than him, thus enabling a better chance to observe someone in the SE corner. BRW may have been sitting further west in the window.