Cass Gilbert Gilbert was a conservative who believed architecture should reflect historic traditions and the established social order. His design of the new Supreme Court building (1935), with its classical lines and small size, contrasted sharply with the large federal buildings going up along the National Mall in Washington, D.C., which he disliked. Heilbrun says "Gilbert's pioneering buildings injected vitality into skyscraper design, and his 'Gothic skyscraper,' epitomized by the Woolworth Building, profoundly influenced architects during the first decades of the twentieth century." Christen and Flanders note that his reputation among architectural critics went into eclipse during the age of modernism, but
Ramsey–Cass–Koopmans model and independent". That the issue of priority ever became a discussion point was due only to the fact that in the published version of Koopmans' work, he cited the chapter from Cass' thesis that later became the "RES" paper. In his paper, Koopmans states in a footnote that Cass independently obtained conditions similar to what Koopmans finds, and that Cass also considers the limiting case where the discount rate goes to zero in his paper. For his part, Cass notes that "after the original version of this paper was completed, a very similar analysis by Koopmans came to our attention.