Interesting analogy, but reasoning by analogy is fallacious. Also the bit at the end in which he says that human bodies aren't expected to grow to 3 or 4 meters

Interesting analogy, but reasoning by analogy is fallacious. Also the bit at the end in which he says that human bodies aren't expected to grow to 3 or 4 meters tall, so why should we expect the economy to grow like that, is particularly flimsy.