The common failure, Gomez says, is trying to stuff more species of life into the habitat than the system can carry, or not introducing them in the correct sequence, as Pimm and Drake discovered.

• 按照高梅兹的说法，通常的失误，往往在于试图往生物栖息地塞入超过系统承载能力的生物，或者，正如皮姆和德雷克所发现的，没有按照正确的顺序来引入这些生物。