Red Wing, MN, USA At a dinner during a conference in Minnesota in 1965, a sun-tanned visiting speaker appeared very drowsy. It was jet lag, so we excused him and waited for his head to soon nod into his soup. It did not, despite my strong wish for an interesting spectacle. After dinner, the visitor recovered and gave an energetic and very novel talk, especially for the psychologists present. For a biologist, he knew a lot about behaviour and for a speaker whose first language was not English,

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... was very convincing. Eibl was so convincing, our department chair insisted we invite him for a semester. We did. He came and, wanting to practice my German and learn more about ethology, I volunteered to attend his seminar and run the film projector he needed for class. As it turned out, https://doi.