There have been many cases of military hardware failing because of problems in feasibility studies, such as the case of the F-104 second-generation fighter in the us.

军事设备的开发会因为对可行性的错误估计半途而废的案例不少，美国的F - 104第二代战斗机的研发就是个典例。

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"In a worst-case scenario, you could eject from a fighter jet, " says senior CAL flight instructor Chou Yu-sen, who once trained F-104 and T33 combat pilots.

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