"There is your world," said the talking frog, "which is the real world. It is reality, and it is stable and solid."
"So we're not in the real world anymore?" asked Brighton. He clutched his amulet.
"Patience," the frog said chidingly. It puffed at its pipe before continuing. "Then there are other worlds, worlds of fancy and imagination. They are the real worlds."
"I thought you said ours was the real world?" Ganymede interrupted.
"Therein lies the rub," sighed the frog. "Either everything is real, or none of it is. Figure that one out, and you'll have your way home."