“哥伦比亚”号解体前,原本有两种方法可以挽救宇航员的生命:一种是宇航员自行进行太空行走,修复飞船;另一种是派另一艘飞船援救宇航员。美国宇航局的管理体制不鼓励人们在安全问题上提出不同看法。一位专家的智慧有时候要大于一群专家,但遗憾的是高层管理人员没有重视不同意见。 There were originally two ways to save astronauts before the collapse of Columbia: one is that astronauts walk in space and repair the spacecraft themselves, and the other is to send another spacecraft to rescue the astronauts. NASA’s management system does not encourage people to put forward different views on security issues. The intelligence of an expert sometimes exceeds that of a group of experts, but regrets that senior management does not value different opinions.