[uf-new] Currency Proposal (and Measurements)
msporny at digitalbazaar.com
Fri Apr 27 07:09:28 PDT 2007
Andy Mabbett wrote:
> In message <4630FFD5.4050607 at digitalbazaar.com>, Manu Sporny
> <msporny at digitalbazaar.com> writes
>> It looks like measurement should be a new Microformat. If it is
>> successful, it would probably replace the currency Microformat.
> I agree with your former statement, but not the latter. There are some
> crucial differences between measurements of size, mass, time, etc., and
> amounts of money.
> For example, the relation between an inch and a centimetre is
> (historical shifts not withstanding) fixed; the relationship between a
> Canadian Dollar and a Pound Sterling changes minute by minute.
> Measurements, are, well, measured. Amounts of money are arbitrarily
Hmmm - I can see your point, that there are nuances. After reading
through all of the currency-examples, I see that the relationship
between currencies is in the problem statement.
Emil, you, and I are talking about slightly different problem statements.
Emil's idea attempts to create the concept of sub-classing/inheritance
for Microformats (which I don't think is a good idea). It also attempts
to define a standard method of marking up measurements (which I think is
a very good idea).
Your idea provides an extension for currency that could state the
relationship of USD to EU amounts. This need isn't backed up in the
currency examples - is it? None of the examples demonstrate the need to
define relationships between monetary amounts.
The concept that I proposed just attempts to define a microformat for
units of measure. This microformat COULD (not would) replace currency if
it is found that there isn't a need to define relationships between
Regardless - all of us are wildly speculating. Emil would need to
collect enough examples for the measurement-examples page to make the
case for a general measurement uF.
Emil, you don't start the Microformats process by proposing
design-patterns. As Ryan King so accurately put it to some dummy on the
"Using the word "pattern" makes is sound like this has been used before
multiple times. Until something is used in several microformats, I see
no reasonable way to call it a design pattern."
Emil - if you want to push your idea of sub-classing/inheritance, you
are going to have to prove that there is a need for it. To do that, you
are going to have to find enough examples that show that it is required.
Until then, what you, Andy and I are proposing is wild speculation.
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