Scott and Tony -
|In this section I don't see the relevance of "numeric" and
|"character-string". To the functions using these identifiers, they
|are just bits, regardless of what semantics a human might see in
them.
Agreed, this is diverging from the conceptual and into the
engineering.
While the differentiation between "numeric" and "character-string" may
indeed not be directly relevant at the conceptual level, I think the
differentiation that Bill actually had in mind was between human-
readable and non-human-readable identifiers. This does have conceptual
significance: Since, ultimately, the identifier presented to the user
will have to be human-readable, solutions that use non-human-readable
identifiers will necessarily introduce a new layer of indirection,
whereas solutions that use a human-readable identifier don't have to.
FWIW, in Minneapolis, I presented a host-based solution [1] that uses
human-readable identifiers, and that does without a new indirection
layer. The identifiers are DNS names.
- Christian
[1] http://users.piuha.net/chvogt/pub/2008/vogt-2008-hostname-oriented-stack.pdf
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