Absolutely pants at following directions: a common Ravenclaw problem.

"Oi! $DANGEROUS_THEORY_ABSTRACT!" quoth he.
"I'm in no condition to discuss this further right now," quoth you, trusting he'll understand that this means drop it and drop it now without you having to snap further at him, because as far as you're concerned, refusal to discuss something further might as well be a slap in the face.
"All right, I won't go into details, but to get $RESULT, you $SIMPLIFIED_CORE_PROCEDURE," quoth he, utterly ignoring the content of your statement.

*facepalm*

(no subject)

Not a double after all. My memory is not improving.