Credits

Most of the work on this document consisted of thinking and talking. Most people who contributed don't know about it. I tested various of these ideas in a couple of discussions without having the time to present the whole thing. Fragments of countless discussions formed this text and I cannot name every single contributor. If you remember me saying something you now read here, or if you yourself said some such thing to me, then you definitely contributed.

• My sisters and my mother contributed their amazing mixture of arrogance, stubbornness, intellectual flexibility and good sense that make them my kin and this document that much richer.
• My father-in-law spent quite some sleep on this. Thank you for the late hours.
• Abt4 cannot be overrated. I don't know how I shall live my mind without those coffee breaks.
• Special thanks go to the members of the conspirative meeting on the first edition. In addition to some important changes to the text, you gave me confidence to carry on. You instilled a feeling in me of not spreading utter nonsense. Without you the first edition might well have been the last.