Yes I read the book.Heidegger banned from paid teaching jobs for being a Nazi received a severe roasting from his audiences at a series of seminars he gave in the 1950s and 60s at the house of his friend Medan Boss professor of psychiatry in the village of Zollikon Switzerland.His audiences were not composed of curious philosophy students but of hard-nosed materialistic psychiatry students for whom metaphysics renamed phenomenology was sheer nonsense. So they pressed him hard to be explicit especially about the meaning of Da-sein.
So a good read and a must for students of Heidegger's phenomenology.
