他们预计来自支持体系比美国强的国家的父母可能情况会越来越好，但在研究完成前他们不想做这样的假设。

They expect parents from countries with greater support systems than the U.S. to fare better, but don't want to make that assumption until their research is complete.

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另一缓冲策略是将项目或者长期的目标完成的截止日期提前数日，以便不可预计的情况发生。

Another buffer strategy is to move the deadline for projects or long term goals back a few days to allow for the inevitable problems that may arise.

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