他们没有关于失败后果的直接经验，因为之前从来没人放任他们失败过。
They have no direct experience with the consequences of failure, because no one has ever let them fail before.
我们通过直接经验学习；没有通过实践而接受一个理论是学不到任何东西的。
We learn through direct experience; to accept a theory without experiencing it is to learn nothing at all.
我们通过直接经验来学习，如果没有通过体验来接受一个理论就等于根本没学。
We learn though direct experience; to accept a theory without experiencing it is to learn nothing at all.
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