Why they put pics of Happy Meals on the keys of McDonald's cash registers

Just thought this was funny at WUWT, at the head of a piece on the IPCC's odd use of maf:



What the IPCC did, of course, is much less funny.

Watts Up With That. Sigh ♥.

Update: This is not to claim that your darling D-blog understands math, including making change. When he gets a job at McD's (soon, soon), he'll need those pics.