[sc34wg3] SAM-issue term-subject-identity

[Marc de Graauw]

SAM text of this issue:

"Is the term 'subject identity' needed? It is defined in XTM 1.0, but it is not
clear that there is any use for it. The XTM 1.0 definition is: That which makes
two subjects identical, or distinguishes one subject from another."

The XTM defintion is wrong. Identity is not a notion of strong resemblance, like
in 'identical twins', it is a notion of being a single thing. So either one
subject is identical (which is a tautology) or two subjects are not identical
(which is a tautology too). In no case are two subjects identical. That would
clash with the idea that topics representing the same subject are to be merged.
If we have two topics, which represent two subjects, which are identical (which
the XTM would allow), are they to be merged or not?

Since the definition is broken anyway, and their is no clear need for it, I
suggest it be dropped.

Marc