We all fall into the trap, and I have done so on many occasions, of thinking, legitimately in a sense, that we are almost indispensable. We sometimes think that without our presence on everything the world might fall apart. I have seen politicians who were at the fulcrum of political life either lose their seats or retire. One wonders how within a week some of the most famous names in public life are just forgotten. This does not happen in a malign or derogatory way. Life just moves on.