PERSON
John Tukey
The statistician who named the bit and the software, built the Fast Fourier Transform, and then spent his career insisting that no computation is honest unless you first look at the data it runs on—making him at once an ancestor of modern AI and its sharpest standing critic.
John Tukey gave the digital age two of its essential words. He coined bit—the binary digit, the atom of information—around 1947, and Claude Shannon published the term in his 1948 A Mathematical Theory of Communication with credit to Tukey. A decade later Tukey wrote the earliest known printed use of the word software, a coinage so quietly buried that no one noticed for forty years. He did not bother to claim the naming of either. What he cared about was getting the concept clean, not owning it. In 1965, with James Cooley of IBM, he published the Fast Fourier Transform—one of the most consequential algorithms ever devised, which collapsed a computation scaling as N-squared into one scaling as N log N and quietly made modern signal processing, medical imaging, and much of deep learning computationally feasible. But Tukey is also the founder of exploratory data analysis
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