Alexander Fleming — "That's funny."
That's funny.
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More from Alexander Fleming
"The public will probably never understand the difficulties that beset the path of the original investigator."
"I have always been interested in the effect of one microbe on another."
"The public looks for miracles. We scientists look for facts."
"It is not often that one finds a substance that is both highly bactericidal and non-toxic to animal tissues."
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Details
Upon observing the inhibition of staphylococci growth around a contaminating mould on a culture plate, leading to the discovery of penicillin
Date: 1928
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Understanding this quote
What it means
Something looks wrong or unexpected — and that's exactly why it matters. This phrase captures the instinctive pause a curious mind makes when reality doesn't match expectation. Rather than dismissing an anomaly as inconvenience, it signals genuine interest: something here deserves a second look. It reflects the attitude of someone who treats surprises as invitations to understand rather than obstacles to discard.
Relevance to Alexander Fleming
Fleming reportedly said these exact words in September 1928 when he spotted mold contaminating a petri dish of Staphylococcus bacteria — and killing them. A less observant scientist would have discarded the plate. Fleming's career-long habit of careful looking, sharpened by WWI work treating infected soldiers' wounds, made him pause and investigate. That single moment of noticing something odd ultimately yielded penicillin and saved hundreds of millions of lives.
The era
In the 1920s, bacterial infections killed indiscriminately — pneumonia, sepsis, and wound infections were effectively death sentences. World War I had just shown that more soldiers died from infected wounds than enemy fire. Hospitals relied on antiseptics that were often as destructive as the bacteria themselves. The medical world desperately needed a systemic treatment. Fleming's seemingly trivial observation in 1928 would, within two decades, ignite the antibiotic era entirely.
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