"Gentlemen, they drove the Golden Spike in 1869, coupling America's East and West by railroad. Three years, two hours, and forty-five minutes from this very instant, we shall drive the Golden Key home in the Z-wave link between Mother Earth and her distant daughter Neoterra!" Again came the thunder of applause. "Thank you," said Paul. "Are there any more questions?" "One," called a voice from the rear. "Yes?" "This recording of the Z-wave was made from Z-wave Central?" "Yes!" "Just for the purpose of circumventing any such odium of doubt, is there any method by which you can definitely determine the time of origin of this recorded transmission?" "Not at the present. It can be established by the radio beacon records that I was on Proxima I at that time--what I hope to do is to have the unknown woman come forward and identify herself and the time she used the Z-wave." "Then other than that there is no way of proving that this recording might have been made on terra a month before you left?" "I--" But Thorndyke interrupted. "Gentlemen," he said, "no man in his right mind would attempt a fraud upon this body. I have no doubt. I firmly believe that Paul Grayson has presented evidence that he has collected in true scientific honesty!" This brought another round of cheering. And in the midst of it all, the questioner came walking down the aisle toward the platform. Out of the shadows he came, and Paul tensed for the imminent battle of wits, for the questioner was none other than Chadwick Haedaecker. "Where did you get that recording?" he shouted over the cheers of the crowd. "On Proxima." "On the Z-wave?" "Yes." "Doctor Thorndyke, may I have the stage for a moment?" Thorndyke nodded, wondering what this was all about. Paul stepped aside as Haedaecker took the podium. "Gentlemen," said Haedaecker, "for some number of months, my young friend here has been avidly attempting to force me into trying experiments made years before. He has a personal, ingrained belief that Haedaecker's Theory is at fault. You have heard his alleged recording--" "Alleged!" stormed Paul. Haedaecker held up a hand. Then he pointed out to the audience. "Doctor Haddon, could this message have passed through the Z-wave Central?" A hush fell on the auditorium. Haddon rose and cleared his throat. "According to my records, Z-wave Central was inoperative for a fourteen day period immediately following Paul Grayson's departure for Proxima Centauri I. Certain repairs were needed, and the Z-wave equipment was shut down for that period. All Z-wave messages terminating on Terra were shunted through the Auxiliary Tandem Z-wave Station at Oahu, Hawaii. The Proxima Beam was shut down, too, since the radio signal emanating from it would not reach Proxima for four years, and that which Paul Grayson was to measure had been emitted four years ago. It was not deemed reasonable to maintain the beam--" Paul gulped. "This is preposterous," he roared.