He explained about the caravans. The child nodded.
“People all get together to travel?”
“Precisely.”
“Where to?”
“All sorts of places. Sto Lat, Pseudopolis…Ankh-Morpork, of course…”
“But the river goes there,” said Esk, reasonably. “Barges. The Zoons.”
“Ah, yes,” said the merchant, “but they charge high prices and they can’t carry everything and, anyway, no one trusts them much.”
“But they’re very honest!”
“Huh, yes,” he said. “But you know what they say: never trust an honest man.” He smiled knowingly.