>> I would rather go for a requirement 'no-envionmental-changes'
>> requirement for all activities, with very heavy fees for exceptions.
> 
> Rather than "fees for exceptions" I'd call that "charge for 
> resource use".

I think I mostly agree with you in practice. But classifying the use of
limited resources as an exception does mmake it even more clear that
this should by default not be done - with maybe some exceptions.

Wouter van Ooijen

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