"And besides," continued an engineer, "how do these pictures get into the air in the first place? Where do they come from?"
"They're sent from a satellite in the sky," the traveler said, as all heads looked up. "You can't see it, of course. It's too high. But it's there."
"And of course you expect us to believe in something we can't see," said one of the scientists, with a touch of scorn.
"Believe it because of its effects—the results—the evidence of its existence," the traveler said. "If it weren't there, you would see no pictures."
"We know you're lying," another engineer said. "Even if there were a device in the sky, held up by a balloon or whatever, it couldn't send a signal down here without a wire. That would be against everything we know about electricity. And I don't see any wire."
"Well, it doesn't use a wire," said the traveler. "The signals are sent through the air. And the satellite isn't held up by a balloon; it stays up because it's high enough so that gravity doesn't pull it down."
"Now he's denying the law of gravity again," said one of the scientists. "Let's go. I've heard enough. Whatever he does to perform his little trick, he isn't telling us about it, so let's just leave."
"Yeah, let's get out of here," another scientist said. "Every time we catch him in an impossibility, he tells us the explanation is in the sky." Then turning to the traveler to say goodbye, he added, "We cannot believe something when the weight of scientific evidence is against it."
"But when the physical evidence is clearly before you," said the traveler, "how can you not believe, even if your theories cannot explain it?"
"Because such an event would be a miracle, and science has nothing to do with miracles."