In 1903, however, Newcomb was also saying, "Quite likely the 20th century is destined to see the natural forces which will enable us to fly from continent to continent with a speed far exceeding that of a bird.
然而，紐康在1903年時也表示：「在20世紀時很可能注定會看到，自然的力量將可讓人類以遠超過鳥類的速度從一個洲飛到另一個洲。