This one comes from my “arrogant things people say in the scientific literature” file.
There is no credible evidence to justify the portrayal on the January 2002 Auk of Microraptor with a thick, white downy coating of putative protofeathers (A. Feduccia pers. obs.). –Alan Feduccia Birds are Dinosaurs: Simple Answer to a Complex Problem The Auk: Vol. 119, No. 4, pp. 1187–1201.