Another day, another senior departure from Goldman Sachs. In the past few months, you would be forgiven for thinking that Goldman Sachs is crumbling to pieces from the top down as dozens of its partners have streamed out of the door.

These partners, it would seem, are being politely nudged out of the door for hanging around past their prime - part of a brutal cost-cutting which involved 3,000 staff being culled last year. Or they have caught up with the rest of the world and lost faith in Goldman Sachs and its ability to outperform the industry. Or they believe the golden age of investment banking is entering its twilight years and have decided they would rather play golf or chance their arm on their own.