Acknowledgements

Many of the questions (and answers) appearing in the FAQs have arisen during seminars or in conversations or correspondence with many people including Jan Ambjørn, Damiano Anselmi, Andrei Barvinski, Alfio Bonanno, Cliff Burgess, Peter Fischer, Laurent Freidel, Florian Girelli, Taichiro Kugo, Stefano Liberati, Daniel Litim, Renate Loll, Pietro Menotti, Michele Mintchev, Tim Morris, Max Niedermaier, Shin’ichi Nojiri, Ichiro Oda, Sergei Odintsov, Daniele Oriti, Jan Pawlowski, Carlo Rovelli, Naoki Sasakura, Frank Saueressig, Adam Schwimmer, Marco Serone, Ergin Sezgin, Ilya Shapiro, Ian Smit, Lee Smolin, Rafael Sorkin, Wataru Souma, Kelly Stelle, Thomas Thiemann, Gerard ‘t Hooft, Ivan Todorov, Peter Van Nieuwenhuizen, Misha Vassiliev, Matt Visser, Christoph Wetterich. My understanding of this subject owes much to these interactions. I am particularly indebted to Steven Weinberg, who started the asymptotic safety programme in 1979, for his encouragement, and to Martin Reuter, who restarted it in 1996, for liberally sharing his insights with me on many occasions. Last but not least, I want to acknowledge the important contribution and support of my past and present collaborators Roberto Floreanini, Djamel Dou, Daniele Perini, Alessandro Codello, Christoph Rahmede.