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Title: Message > Isn't the problem there the phone numbers which validate and which don't work? :) There are web sites that hold very strange data for me, because they insist that my phone number has to be 10 digits and my address has to have a two-letter "state" with a limited range of values. Yesterday I used a web site
that demanded I enter two phone numbers, that had to be different. So I invented
one of them.
I've always been sceptical about validation. It
encourages people to enter incorrect data in order to get it past incorrect
rules. It's one of the things that
gives computers a reputation for being
inflexible.
Michael Kay
(PS: XML Schema Part 0 shows the problem. It defines a
type UKAddress, which demands that all UK addresses have a "city" component. But
most people in the UK don't live in cities. So we just have to pretend that we
do, because that's what the computer
requires.)
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