Thanks for the nice words. 
It was part personal knowledge, part inspiration. I was inspired by the stuff I had read in previous years, as I have even some literature at home. I'm quite knowledgable when it comes to german cinema, as I've lived hear for almost two decades. Nevertheless I have read far more about german filmhistory than I have actually seen myself.
I wrote this piece yesterday and today without research, (though I think it's accurate) and my problem was actually limiting myself, when I began to write much more as I had intended. When I noticed this, I cut down several passages (I think this can be negatively felt while reading the text...). I mean, this is meant as an appetizer, and a short introduction to the period. If somebody wants to know more, there is enough literature to choose from. And the reviews which I'll try to write over the next months will hopefully provide further information. And maybe there are others who also watch some films from that period 
Anything by Fassbinder would qualify