Jiri Benovsky began to study metaphysics to try to find a proof that the world really exists. He did not find that proof, but at least he found a job at the University of Fribourg, in Switzerland, where he can not only go in the mountains but also spend his days thinking about things like existence, reality, possible worlds, and most of all - time. Time and philosophical problems surrounding it have always fascinated him to the degree that he devoted half of his first book to it ("Persistence through time and across possible worlds", 2006), as well as a number of articles in international journals. He is also the author of two other books, including one on the philosophy of photography (which, yes, also includes a chapter on how time is represented in photographs).