无法预料的问题则需要靠预防性措施来补救。
Preventive actions can offset what were once unforeseen problems.
即使你分析了问题，经常做分析工作，无论做得多么细致周到，无法预料的现实情况都会证明事先的分析是错误的。
Even if you do analyze your questions, frequently the analytical work, no matter how robust, proves wrong because of something that can't be anticipated.
更直接的问题是，当人们反射性地使用数据类型时，常常以无法预料的方式降低灵活性。
A more direct problem is that when people reflexively use data types, they often end up reducing flexibility in unanticipated ways.
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