Though most Sinologists have more criticisms of the work than praise to offer about it, Menzies has nonetheless been invited to lecture or give seminars at Oxford, Cambridge, Harvard, and other leading centers of intellectual life.
孟西士大膽假設、也大膽求證的《1421：中國發現世界》，原本只是業餘歷史研究者的著作，經過出版商炒作，在國際間掀起熱烈討論，雖然漢學界對此書的評價毀多於譽，但孟西士仍獲邀前往牛津、劍橋、哈佛等世界各知名大學演講或參與研討會。