----- Original Message -----
From: "John F. Sowa" <sowa@xxxxxxxxxxxx
> In current terminology, we have three terms 'set', 'class', and 'type'.
> The words 'set' and 'type' have long histories in both technical and
> informal usage, and there is no confusion about their meanings.
> The word 'class' has been used in so many conflicting ways in both
> technical and informal usage that it causes a great deal of confusion.
> Therefore, my recommendation is to prefer the words 'set' and 'type'
> for all metalevel usage, both technical and informal. The word
> 'class' could still be used for particular languages in which it
> is endemic. But to promote precision, the words 'set' and 'type'
> should be preferred for all cross-language discussions.
> John Sowa
Don't forget the word 'concept', as used in natural language.
The Rand ITOE 1990 book is a good reference for concept-related
terminology. Rand terminology is based on Aristotle.
My tabula rasa terminology is based on Rand. (01)
> Dick McCullough
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