I wish I agreed that a code of conduct shouldn't be necessary, that the law and common sense should be enough to ensure good behaviour. Alas, I think the very point that common sense is uncommon, and that there's no argument against "I thought I was behaving decently" make some kind of fallback necessary. A code of conduct is not, of course, a legal agreement or contract, but the same reasoning applies: Hope for the best, but plan for the worst.

I'll be sorry not to see Christian at Nürnberg.