【注】:
1.摩菲定律(Murphy's law)常被陈述为“能出错的,准出错。”(Anything that can go wrong, will go wrong.)其首见之文献为1955年五、六月号(May–June Issue)的航空机械公告杂志(Aviation Mechanics Bulletin),其陈述为“航空器若可能组装错误,准有人会那样做。”(If an aircraft part can be installed incorrectly, someone will install it that way.)