But what if it’s not fine? Even back in 1996, before a single component of the ISS was launched into orbit, NASA foresaw the possibility of an even worse worst-case scenario: an uncontrolled reentry. The crux of this scenario involves multiple systems failing in an improbable but not completely impossible cascade. Cabin depressurization could damage the avionics. The electrical power system could go offline, along with thermal control and data handling. Without these, systems controlling coolant and even propellant could break down. Unmoored, the ISS would edge slowly toward Earth, maybe over a year or two, with no way to control where it is headed or where its debris might land. And no, we could not save ourselves by blowing the station up. This would be extremely dangerous and almost certainly create an enormous amount of space trash—which is how we got into this hypothetical mess in the first place.
三十年前,秘鲁在恶性通胀与内战阴影中推进产权改革,经济一度重回增长轨道;三十年后,总统频繁更替、政治对立加剧、制度信任崩塌。德索托的名字,既象征一种发展理论的希望,同时也提醒我们:一个国家的命运,从来不只是经济学问题,更是制度能否持续运转的问题。
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