Contradictory approach

Sir, - The SNP is proposing to halve Air Passenger Duty which it is claimed will increase air travel to and from Scotland by 30% and thereby improve our economy.

However, the party is now also planning to increase the carbon emissions reduction target from 42% to 50% by 2020.

Since it is well known that air travel is one of the higher sources of carbon emissions, can anyone explain how these two diametrically opposed objectives represent joined-up thinking? GM Lindsay. Whinfield Gardens, Kinross.