Abbott@AEROSPACE@sri-unix.UUCP (10/20/83)
From: Abbott at AEROSPACE (Russ Abbott) In considering the question of Prolog's purity vs. its convenience for programmers, I wonder how '=..' fits in. As a pure first order logic system, Prolog disallows variables as predicate names--even though that would sometimes be very convenient. Yet one can write Term =.. [Predicate | Arguments], Term, in violation of all first order principles. What are the justifications for these rules ?