Rudi Klein (24 October, page 35) is right to point out that there is no room for defective thinking to remedy defective design.
Zero defects is a good idea. Having integrated teams to do the design is a good idea. Shooting the whistleblower is a bad idea.

Until the industry comes up with methods for avoiding rather than hiding defects, the financial expedient of withholding payments will remain a legitimate trading arrangement to anyone overseeing (PFI) contracts.

Postscript

Barrie Moore, via email.