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Climate Change

The hon. Gentleman knows that at the margin one can calculate elasticities on the basis of performance. When that is done, there will be an effect at the margin. In English, that means that some people’s behaviour will not change, but enough people’s behaviour will change to take off the growth. On aviation, one of the key issues that we must face is that if the sort of growth that we are discussing takes place, in a short time we will not be able to indulge in any form of activity that emits carbon other than aviation. There is clear evidence that if the price of goods or services is increased, demand is reduced.