10 Key Points
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By the 1920s, peer review was already a normal part of publishing in biology and medicine journals.
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Most big journals had editorial boards and outside reviewers deciding which studies got accepted.
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Rejection rates varied, but many papers were turned away or heavily revised.
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In 1927, Hermann Muller published a bold Science paper claiming X-rays caused gene mutations — with no data.
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That paper became the foundation for his 1946 Nobel Prize and the cancer risk model still used today.
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The surprising part: his article almost certainly skipped peer review.
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Muller wasn’t naïve — his mentors and colleagues had built the peer-review system, and he’d published in it before.
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He seems to have bypassed review deliberately to be “first” and secure credit before rivals.
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Competitors were publishing similar radiation-mutation work at the same time, adding pressure.
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Muller’s gamble worked — he won fame and prizes — but his findings stayed controversial for decades.