An excellent piece by Anne-Marie Slaughter in the FT highlights how we need to change the way we visualise career trajectories.  I was greatly impressed by Slaughter's book Unfinished Business, in which she explores the reactions to her decision to leave a very high profile political job, as director of policy planning in Hilary Clinton's State Department, in order to return to a more 'normal' family life in New Jersey.  This was prompted by the difficulties in reconciling parenting of teenage children with an all-consuming job - in spite of having a husband who took major responsibility for the children. Slaughter's decision triggered a huge reaction, much of it bitterly critical.  I…