The specifics might be arcane, and the topic (pensions) might be boring, but the promise is huge: double the size of your pension for the same amount of contributions. That’s what Colm Fagan, a former chairman of Standard Life International and former President of the Society of Actuaries in Ireland, thinks is doable.  Last week Fagan presented a paper to the Society of Actuaries in Ireland entitled “A new approach to auto-enrolment — higher pensions for half the cost”. The background here is that the government is working on a new plan for the pension system. It foresees people aren’t…