Underpinning Beeching's proposals was his belief that there was too much duplication in the railway network: "The real choice is between an excessive and increasingly un-economic system, with a corresponding tendency for the railways as a whole to fall into disrepute and decay, or the selective development and intensive utilisation of a more limited trunk route system". Of the of trunk route, involves a choice between two routes, a choice of three, and over a further a choice of four. In Scotland only the Central Belt routes and the lines via Fife and Perth to Aberdeen were selected for development, and none were selected in Wales, apart from the Great Western Main Line as far as Swansea.