Emeritus Professor James Anderson's call for "two borders" (Comment, August 4) seems a convoluted proposal. Much better to have no borders at all - that is, to dump Brexit.
Professor Anderson also calls for the start of a campaign for his "two-door solution". A more productive step would be to call for another referendum on Brexit, unless his real objective, by hook or by crook, is to use Brexit to get a border down the Irish Sea, thus semi-detaching Northern Ireland from the rest of the UK.
PROFESSOR EMERITUS FREDERICK W BOAL
Ballyclare, Co Antrim