Dear Barry, (01)
See below. (02)
Regards (03)
Matthew West
Reference Data Architecture and Standards Manager
Shell International Petroleum Company Limited
Shell Centre, London SE1 7NA, United Kingdom (04)
Tel: +44 20 7934 4490 Mobile: +44 7796 336538
Email: matthew.west@xxxxxxxxx
http://www.shell.com
http://www.matthew-west.org.uk/ (05)
> >MW: But if you can cope with changing parts, what lead you
> to consider
> >that a team was a type rather than an individual (an organisation of
> >some sort I would have said)?
>
> I did not say that a football team was a type. I drew an analogy:
> just as teams can gain and lose players, so types can gain
> and lose instances. (06)
MW: I must remember that trick. When someone asks for an example, give
them something that isn't, but is (sort of) similar, and then you can
side track them with a discussion of why it isn't an example. (07)
MW: I'm beginning to wonder what it is you are trying to hide.
>
> >MW: And of course I'm sill looking for an answer to the question of
> >why you need types whose members change over time.
>
> Ever heard of Charles Darwin? (08)
MW: Something about evolution which has lead to species being
specailised by clade. Dont't see what difference it makes. I still have
all the rabbits for all time (and if appropriate all their descendants).
I still don't need sets/classes/types/categories that change over time,
and you still haven't told me why you do. (09)
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