美國的軍事優勢近年來日益鬆動，為了維持優勢美國努力發展新的軍事科技，其中有四個項目特別引起注目：迷你無人科技、優勢機動科技、長程打擊科技、與導能武器科技。然而，本文發現，這四項科技不是發展曠日廢時、緩不濟急，技術障礙嚴峻，就是基於矛盾錯誤的想定，或是會產生新的弱點，均無法維繫美國的軍事優勢。

US military preponderance is increasingly endangered, and four novel approaches are thus envisaged to sustain this preponderance: mini unmanned technologies, dominate maneuver technologies, long range strike technologies, and directed energy weapon technologies. However, all these technologies are either facing formidable technical obstacles, taking too long to realize, driven by problematic assumption, or creating new defects. In sum, none of these four technologies could sustain US military preponderance.