About the conservatory, then somehow you must have been semi-transported back in time when you put that poster on the board. Dunno how

In the asylum they seemed quite keen to cut people's body parts. I guess Mr. Head was one of those 'lucky' ones. The lady there was completely mad, cos she thinks she's Dr. Sartorius.
Basically Frobozz, don't think about it. Zork's suppose to be comicsh (lol, new word). If you think about all the laws of nature and common sense the game has violated the whole serie would seem stupid.
Take for example Dimwit's law to make people pay 97% taxes (or something like that) and then the descion to make it 100%. This makes NO sense at all what so-ever, cos with that kind of taxes, there would be no Great Underground Empire at all. But you're suppose to laugh at it, not analyse it.
JUST PLAY THE FREAKING GAME! lol.