By trial and error - trying things, making mistakes, and learning from those mistakes - we have figured out how to make electric light, to paint the ceiling of the Sistine Chapel, to fly.

通过尝试新事物，不断犯错，并吸取教训这种反反复复的实验探索，我们才懂得如何制造电灯，如何制作西斯廷教堂天顶壁画，如何飞行。

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Instead, to judge by the most comprehensive study on the reliability of forensic evidence to date, the error rate is more than 10% in five categories of analysis, including fiber, paint and body fluids. (Meaning: When the expert says specimen X matches source Y, there's a 10% probability he's wrong.) DNA and fingerprints are more reliable but still not foolproof.

FORBES: Forensic evidence doesn't always tell the truth.