A big thank you ...

First I want to thank the four teenagers (Elisha, Niclas and two more)
for their surprising reaction.

I also want to thank my construction team for their support:
Helmut Kopp, Karin Kopp and Frank Darmstädter.

For the broad support and the "eagle eye" I would like to thank Regina Bartolo-Präger.

Thank you dear Eva for all the great conversations, good and endless moments and suggestions.

In addition, my thanks go to Werner Schneider-Quindeau of St. Catherine's Church Frankfurt
for the opportunity to start the experiment - and for the good cooperation.

A big "thank you" for the support to Sparkasse Darmstadt.

Further thanks go to Mr. Löw of Löw communication technology in Frankfurt
for the professional assistance.

Thanks for the support and the exchange of ideas and feedback to Dr. Markus Zink, Volker Rahn,
Dr. Michael Kibler, Joachim Christ and Rebecca Keller.