This supposed shift -- applied here to cover about thirty years of Heidegger's 40-year writing career -- has been described by commentators from widely varied viewpoints; including as a shift in priority from "Being and Time" to "Time and Being"—namely, from dwelling (being) in the world to doing (time) in the world. (This aspect, in particular the 1951 essay ""Building, Dwelling Thinking"" influenced several notable architectural theorists, including Christian Norberg-Schulz, Dalibor Vesely, Joseph Rykwert, Daniel Libeskind and the philosopher-architect Nader El-Bizri.)