Hindsight is always twenty-twenty

Posted by James Briggs July 23, 2004In reply to Hindsight is always twenty-twenty posted by Jennyatsea on July 23, 2004

Can you guys tell me the origin of this idiom?Actually I'm not sure if it's an idiom. I picked it up from a web .I forgot to copy the context.

This comes from eye testing. Perfect vision is defined as 20/20. Thus, hindsight, which produces 'perfect' vision of the past, can be so described.

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