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Double standard for keywords
- To: JONL at MIT-MC
- Subject: Double standard for keywords
- From: DLW at MIT-AI (Daniel L. Weinreb)
- Date: Thu ,7 Feb 80 07:12:00 EDT
CC: (BUG LISPM) at MIT-AI
Jonl, when Dave said the colon is necessary, you misunderstood him To
say that the colon is necessary does NOT mean that leaving it off is
*guaranteed* to fail. Just because it might woak is no contradication
to what Dave said. What is means is that the colon is DEFINED to be
necessary; we TELL you in the MANUL that it is necessary; we make
absolutely no guarantees what will happen if you leave it off. The
contract between a system and its users is defined by the manual; the
system only guarantees to do what the manual says, and nothing else.
The manual is the contract between the user and the system. This
is a very important concept.
I speak, of course, of the ideal case of an always-up-to-date manual
that is totally complete, but I am using the term "manual" in a
somewhat metaphoric sense; I think it is clear what I mean.