ADV DE JAGER
Mr Donan, could I perhaps interrupt?  We've often heard about the doctrine of the need to know principle - we've often heard evidence about that at this Committee, namely that things were kept close and secret and it was only conveyed to a person who actually needed to know about it, otherwise it was simply not mentioned.  Are you at all aware of such custom - perhaps I could put it more strongly that it was actually part of the politics of the day or the system in use at the time, was based on a need to know principle?