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Jim Blandy writes: > > Mikael Djurfeldt was really hot to give Guile a Meta-Object Protocol, > which is (if my very shaky understanding serves me) a way to customize > the implementation of the object system itself, in a class-like > manner. So, although the current module system isn't designed right > to give things like this reasonable performance, it's conceivable > that, by using different meta-classes, you could implement classes > this way and get decent performance. > > But I must admit that I don't really understand the art of the > meta-object protocol... which I should... > Mathematical set theory and logics has to be careful about avoiding antinomies like those of Russel, Burali-Forte and Cantor, all caused by meta-sets. Zermelo's set axioms eliminate the danger of antinomies. May an improperly designed meta-stuff protocol also lead to antinomies? How are they avoided in CLOS ? Klaus Schilling