Sometimes all it takes is one more flap of a butterfly wing to unhinge the unstable worker.

FORBES: Change During Tough Economic Times Can Kill

In London Mr Hirst presides over two large industrial units producing the butterfly-wing pictures and his photo-realist paintings.

ECONOMIST: Damien Hirst

The only Hirst pieces that are showing signs of recovery are butterfly paintings, particularly the wing-only works that evoke kaleidoscopes and stained-glass windows.

ECONOMIST: The art market