The content of this lecture consists of several things that might seem rather strange, unexpected, or vice versa - = it is “showing the non-living and the invisible.” The situation we have now, the one I see in front of me, i.e. an empty room, absence, even empty chairs stand at a distance of one meter or more from each other - is one of those signs of non-living, non-human and invisible, which, having manifested itself, dramatically changed the situation of our daily lives.