Knights of the Lambda Calculus: n. A semi-mythical organization of wizardly LISP and Scheme hackers.
The name refers to a mathematical formalism invented by Alonzo Church, with
which LISP is intimately connected. There is no enrollment list and the
criteria for induction are unclear, but one well-known LISPer has been
known to give out buttons and, in general, the members
know who they are....