Zero-error experiment can observe the distribution of gross error after robust estimation, then compare the estimation value and real value, so we can evaluate externally all kinds of robust method.

零误差实验可以更有效地观察粗差在经过抗差估计以后的分布情况，再将估计值与真值比较，从而较客观地对各种抗差估计方法做出评价。

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Even if it flopped, this expensive experiment would be almost a rounding error to Toyota.

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