News0 min ago
Its not rocket science you know
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What did people used to say instead of "Its not rocket science" before rockets were invented.
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For more on marking an answer as the "Best Answer", please visit our FAQ.The earliest-recorded use of the word 'rocket' in the sense meant here was in the early 1600s, so they must have been invented some time before that! Accordingly, there was no equivalent phrase in direct answer to your question.
In more modern times, however, it was common to hear people say: "You don't have to be a brain surgeon to understand this." Will that do?
If you click here, that will link you to a web-page which outlines the facts about the history of brain-surgery. It dates back about 10 millennia...so, yes, somewhat earlier than the 1930s!