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From: Daniel Cerqueira <dan.list@lispclub.com>
Newsgroups: comp.lang.lisp
Subject: Re: Undefined in LISP
Date: Sat, 22 Mar 2025 12:07:14 +0000
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Lawrence D'Oliveiro <ldo@nz.invalid> writes:

> On Fri, 21 Mar 2025 22:47:38 +0000, Daniel Cerqueira wrote:
>
>> I would like to know your thoughts, about what being undefined actually
>> is. Should an undefined expression be represented by a symbol, or should
>> an undefined expression be silent (without returning a symbol)?
>
> Should an attempt to evaluate such an expression even terminate?

My opinion is that it should...

-- 
The pioneers of a warless world are the youth that
refuse military service. ~ Albert Einstein