er switched all around, showing
them twenty channels in all. Such was the amazement and even
incredulity of the engineers that they already began to suspect
some kind of trick. The scientists looked confused.

"You certainly have a lot of films stored in that little
box," one of the engineers said. "How do you get them all in there?"

"The pictures are not in the box," said the traveler. "They
are all over in the air around us. This antenna brings them in
and the set makes them visible." The engineers laughed while the
scientists sneered, the latter now sorry they had allowed themselves
to be talked into coming to hear this notorious nut.

"Come now," one of the scientists said. "Do you expect us
to believe that there are pictures floating around us in the
air--pictures we cannot see? And that twenty sets of these pictures
are all present at once, scrambled together, just waiting for that
little box to take them and sort them out? What do you take us for
anyway--a bunch of gullible greenhorn fools?"

"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 goodb