Apology

I'm very sorry for whatever I wrote yesterday, I happend to got a quite drunk because of the closing of the introduction. I shouldn't have gone online in that state. I now redraw whatever I said, because I'm afraid it wasn't all that neat. For today I'm not going to write anything either, since our physics department happend to celebrate the beginning of the new academic year by means of a free 'borrel', with beer&wine for nothing... Regards, --Jeroen