In May 2001 I spent a week in Tübingen chatting with
Christoph Schwarzweller (then in Tübingen, now in Gdańsk). He showed me some interesting places of this
historical town. Upon return to Edmonton I knew that while in Tübingen
I saw something of tremendous social value to be used at parties and such.
And yet, it totally escaped me what the thing was.
Two weeks later I recalled what I had forgotten: in Tübingen I
Alzheimer's house where he lived as a student for a year. What is now known as Alzheimer's disease
has been announced to the world also in Tübingen, see here.