[racket] Typed racket puzzle (ii)

From: Shriram Krishnamurthi (sk at cs.brown.edu)
Date: Wed Aug 17 14:34:20 EDT 2011

Very nice lunch break, though it's really the intersection of Postel's
Law and reflection that you're highlighting here.  The problem with
that is that reflection breaks just about *everything*, so it's harder
to blame ol' Jon Postel. (-:


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