Interested readers who have studied all the questions and have tried all the programs are entitled for a moment to relax. Maybe they can find some rest by reading the beautiful poem July 22 consisting of 16 limericks (rhyme scheme a,a,b,b,a) by Siclone in which he plays with the words: paradox, planets, sound and time.
The following poem c = 299,792,458 meters per second by Paul Greenberg is also very relaxing.
I would like to thank particular the people who have already responded by private communication.