The implication there is that this person has seen magical illusions, then. Rosinante isn't sure if he should take that truly at face value or not. Magic doesn't exist, but then, neither do spaceships. And yet...

"Never heard of a 'moto'," he says. "Never seen an illusion like that either, other than ships fading out at the horizon, or land floating above it, under the right type of weather and sea. How would someone make something like that, where you're from?"