It's very helpful. Mark seldomly talks so much about his inspiration. Apart from Rüdiger maybe.
Which he also mentions in this Video. I must confess that it was only today that I understood the connection with the Lennon murder. It was not only that he met R. during that time and that was it. He mentions that Rüdiger could have had a weapon in his briefcase as well. So it was not just the fact that R. appeared "strange and ridiculous" but MK also must have felt anxious and feared another attack, after Lennon was asked for an autograph by Chapman. I knew the facts but never connected them.
LE