Flexible," I said. "Meaning we're making it up as we go along. - Ben Aaronovitch

“So the moon effects magic, why?”
“I’m working on several theories,” I said. “But I’m currently favoring the hypothesis that the moon has a seemingly arbitrary effect on magic because it likes to piss me off.”
“That’s a theory with a high degree of applicability to other spheres of life,” he said.

I rang her and left a message identifying myself and giving an impression of urgency without actually saying anything concrete. Never record anything you wouldn’t want turning up on YouTube is my motto.

And having made sure my attention was focused in one direction the universe, which likes a good laugh, smacked me in the face from the other side.