Dr. Eddie Casey:

The appeal of ring-fencing it is that the returns can then be used as a sustainable resource coming out of the investment. If we, like they do in the paper, assume there is a 3% real return, then that would generate money that can then be used to put towards day-to-day activities and spending, and specifically towards costs like ageing costs and higher pensions costs that we know we are going to have to face in the future and that we do not currently have funded.