there was no change in their mental structure. I repeat, none. We know now what was far from our understanding then, that we were telling them something they already knew. As we were not prepared at that time to entertain that hypothesis, we decided that this particular group of individuals was for some reason unsuitable for our purposes and that we must try an altogether different type, and preferably of a different age group. We had tried mature individuals. We had already suspected what we since have confirmed, that in this species the older they get, the less open they are to new thought material. Now, it so happens that the place where our craft descended is in an area much used for the before-mentioned mating rituals. Several times in the two day-and-night periods of our attempt with the older group, youngsters had arrived in various types of metal machines from the city – and had quite soon gone away, sensing our presence, if they did not see us. They all arrived in daylight. But on the third day, as the sunlight went, four young ones arrived in a metal conveyance, got out of it and sat fairly close to us on a small rocky rise.
