Sir Alan Muir Wood is surely right (Letters 23 January) to highlight the inherent contradiction between sustainability and economic growth. His conclusions are perhaps rather more debatable.
The plain fact of the matter is that it is the excesses - as some would see them - of US and British consumers in particular, which have driven the world economy forward.
If they were now to adopt sustainable practices to any significant extent, the effect on jobs across the world, including many in this country, would be dire.
At a time when manufacturing jobs in Britain are disappearing eastward at an ever increasing rate, can we really afford many such practices? I think not.
David Webb(M) David. email@example.com