| Re: Motorists, stop complaining |
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Group: uk.transport · Group Profile
Author: Nick FinniganNick Finnigan Date: Jun 29, 2008 06:13
DavidR wrote:
>>DavidR wrote:
>>>
>
>>>If they actually mean that the base value in each column is 100 and all
>>>figures in the table are a proportion of that, the statement '(per
>>>vehicle
>>>kilometre)' is completely redundant.
>>
>> No, it isn't.
>
>
> When normalised to 100, it makes no difference whether it is nanometre,
> furlong or light year.
In that they are all measures of distance. However, it is possible to
measure emissions in other ways than per unit of distance.
> mpg is the inverse of energy input or CO2 output. Bringing the index down
> to 79 requires an mpg improvement of 26%%.
No, it isn't and no, it doesn't.
> Irrespective of the maths, if mpg has remained unchanged, then CO2 output
> cannot
> physically have changed either.
It can have changed, and it has.
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