No, Jimbo is utterly certain that the speed of light was measured JUST ONCE in a 20 meter vacuum tube or whatever.
His utter ignorance of the history and methods of science, along with any basic scientific knowledge, is abysmal. Shall we let him in on the little secret that the speed of light has been measured thousands of times in hundreds of ways? Or just enjoy watching him hoist himself on his own petard again, and again, and again?
It won't matter. He has the door to reality closed, locked, dead bolted, safety chained, nailed shut, steal reinforced and has a large dresser pushed in front of it.