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From: xerox@cs.vu.nl (Via Fons Botman)
Newsgroups: comp.lang.scheme
Subject: - and / with one argument should be identity functions.
Message-ID: <4520@skiscs.vu.nl>
Date: 13 Nov 89 17:17:21 GMT
Reply-To: xerox@cs.vu.nl (Via Fons Botman)
Distribution: world,inet
Organization: VU Informatica, Amsterdam
Lines: 10

PLease, let's *not* define (- X) and (/ X) to be something else
than X. It might be the source of obscure errors in (admittedly
ugly) code like:

(define (net-gain gain losses) (apply - gain losses))

Besides that, it may be cute, but it is neither clear nor
consistent, and therefore not "in the spirit of Scheme".

At least, that's my opinion.