“You mean,” said Penfield, “that Beethoven and George Washington would be inevitable?”
“Not that, exactly,” said McCall. “But some kind of musical inventor, and some sort of high-principled military and political leader. There might be differences.”
Hodge said: “Wait a minute. If we are the product of human history, so were Beethoven and Washington. All you’ve got is a determinism, with nothing really alterable, once the sun decided to cast off its planets.”
“The doctrine of free will—” began McCall.
“I know that one,” said Penfield. “But if you deny free will completely, you’ll end up with a universe in which every world like ours is identical—which is as absurd as Hodge’s picture of us is unique, and rather more repulsive.”
“Well, then,” said Hodge, “What kind of cosmology are you putting out? If you won’t have either of our pictures, give us yours.”
Penfield sipped port. “I can only suggest a sample,” he said. “Let’s suppose this world—or one very like it—with one of those improbable boiling-port accidents left out somewhere along the line. I mentioned the wheel a moment ago. What would life be like now if it hadn’t been invented?”
“Ask McCall,” said Hodge. “He’s the technician.”
“Not the wheel, no,” said McCall. “I can’t buy that. It’s too logical a product of the environment. Happens as soon as a primitive man perceives that a section of tree-trunk will roll. No. If you’re going to make a supposition, you’ll have to keep it clean, and think in terms of something that really might not have happened. For example, music. There are lots of peoples, right here, who never found the full chromatic scale, including the classical civilizations. But I suppose that’s not basic enough for you.”
For a moment or two, the three sipped and smoked in the unspoken communication of friendship. A log collapsed in the fireplace, throwing out a spray of sparks. McCall said: “The steam engine is a rather unlikely invention, when you come to think of it. And most modern machines and their products are outgrowths of it in one way or another. But I can think of one more peculiar and more basic than that. Gunpowder.”