Interesting stories from programming language implementors and their design choices and constraints; worth reading, at least if you 're a PL guy

Nice comprehensive guide - but most of the time the references to the origins (smalltalk, lisp, ..) are missing - this is so annoying.

Just finished that; not being a historian, I can't judge how true his 'proofs by evidence' are; clearly he collected a lot of evidence and wrote it nicely down, but not really in a scientific way.