"In some ways you seem sort of like just another kind but you don't have wings, there's no other kinds around, and this is obviously not the place I'm from."

"Well, maybe this is very far away."

"It's certainly that, you said something about the world being round."

"It is! You can test this by measuring shadows." He explains how.

"I think this would give you misleading information at home."

"Huh, how so?"

"Well, plenty of places have suns, and some even have day cycles, but they don't behave so consistently."

"Huh. We've just got the one sun no matter where you go, and everything's very consistent. Objects fall at the same rate when you're a given size everywhere, too."

"How big you are changes that?"

"Yeah, when you're smaller things fall slower. Consistently so! I have a chart."

"What if a small person and a big person watch the same thing?"

"Oh, it depends on the size of the object, not on observers. - not the literal size of the object, pebbles will fall at the big-objects rate if you drop them while big, but the size relative to its ordinary size."

"How can you tell a rock that used to be big from a pebble that's supposed to be that size, if it could have been moved so you can't tell from context?"

"Well, you could drop them!"

"I guess so! Is there any other way?"

"They also heat differently." He has charts for this too.

"Huh! Why do they do that?"

"I don't know! I don't know how I'd find out either."

"I'm not aware of anything at home that changes stuff's size like that - it's the sort of thing that might exist somewhere, but not so many and if there is one it's not famous enough for me to have heard of it."

"I think I'd like exploring your world."

"I can't recommend that."

"Oh? Why's that?"

"It'd be - at least as dangerous as me wandering around here was. I think even if I gave you a full briefing."

"Well, you can't sit in court forever. Or you can but it'd be so sad."

"It can be worse."