to guess is cheap, to guess wrong is expensive 是哪句中文谚语？
to guess is cheap, to guess wrong is expensive.
I saw this phrase in a book, saying that it is a Chinese proverb, but I don't know which Chinese proverb corresponds this sentence.
Could anyone help me out?

Question

Answer

let me guess, you read this proverb in 55W_16146_4 Jitter Primer_2011.08.25.17.37.33_2244_EN.pdf from Tektronix, did I guess right ?

Answer

知之为知之，不知为不知，是知也。

Answer

我想，正如汉语中的成语，应该有一定的使用环境，to guess is cheap, to guess wrong is expensive.单独拿出来，让中国人来猜测，会累死中国人的，就像你给孩子解释一个很复杂的问题，你要花费很多精力，再一个就是你要有一定的文化底蕴。有些简单的事情，往往是最难解释的。

Answer

Westerners often use this to add credibility to a saying. Someone might also attribute a saying to Confucius. After all, five-thousand years of history amounts to a lot of credibility.

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