On Sat, 7 Jun 2008 11:32:36 +0100 someone who may be Roland Perry
 wrote this:-

>>> So how would you cope with trips that have alternative routes of different
>>> lengths?
>>
>>I'm sure there will be some algorithm that the TOCs use to average these
>>out, after all, occasionally scheduled services do run on slightly different
>>routes but the fare isn't adjusted ad hoc. I wasn't intending to lay down
>>hard & fast rules, as there are clearly other factors involved.
>
>In other words, it's actually much more complicated than it sounds, and 
>will simply introduce lots of new anomalies.

Indeed.

It also means it is not possible to charge what the market will
bear/maximise revenue. That is called capitalism and all the major
political parties say they are in favour of that.



-- 
  David Hansen, Edinburgh 
 I will *always* explain revoked encryption keys, unless RIP prevents me
 http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54