On May 7, 2012, at 6:14 AM, John F Sowa wrote: (01)
> Leo and Doug,
>
> Leo
>> “Type” and “Class” are pretty much used interchangeably in ontology
>engineering.
>
> I agree that there is a huge amount of confusion, and both of them are
> also confused with the word 'set'. My recommendation is to use the
> following definitions:
>
> 1. A class is a set of all x of a given type.
>
> 2. Every type can be specified by a monadic predicate that is
> true of every instance of that type.
>
> These two definitions are sufficiently short and general that they can
> be specialized to all the major notations and schools of thought.
>
John,
To me this says that 'ontologists' do not discern content and structure
(endogenous attributes) from behavior (exogenous attributes). Am I
understanding your intent? (02)
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