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Claude Shannon

Original nameClaude Shannon

American Mathematician, Founder of Information Theory

Those Who Conceived That "a Machine Could Think" · Pioneers

Information TheoryThe "Chess-Playing Machine" PaperEarly AI Experiments at Bell Labs

Who they are

Claude Shannon (1916–2001) was an American mathematician and electrical engineer who in 1948 published "A Mathematical Theory of Communication," proposing the "bit" as the basic unit of information and founding the discipline of information theory, thereafter the common mathematical basis of almost all digital communication and computing systems. Shannon was also an early explorer of AI, in 1950 publishing "Programming a Computer for Playing Chess," systematically proposing a search-algorithm framework for a computer to play chess, a paper thereafter acknowledged as the founding work of computer game-playing, a subfield of AI; forty-seven years later, when IBM’s Deep Blue beat the chess world champion Garry Kasparov, its core algorithmic idea still traced to the framework of Shannon’s early paper. Shannon was low-key and multi-talented, and in his spare time loved building strange mechanical devices, including an "ultimate machine" that did nothing but switch itself off, and a mechanical clown that could walk a tightrope.

Primary sourcesShannon, "A Mathematical Theory of Communication" (1948)Shannon, "Programming a Computer for Playing Chess" (1950)

Key stories

Teaching a Computer to Play Chess Is Also Teaching It to Decide

In his 1950 paper Shannon noted that chess is an ideal testbed for machine decision-making — its rules are clear and its states enumerable, yet it is complex enough that all possibilities cannot be exhausted, so the machine must learn to "evaluate the merit of a position" and "make trade-offs under limited resources," an idea thereafter proven applicable to decision problems far beyond board games. Forty-seven years later Deep Blue beat Kasparov, and nearly seventy years later AlphaGo beat Lee Sedol, and behind these two human-machine matches nearly half a century apart one can see the shadow of the search-and-evaluation framework Shannon’s early paper proposed.

Relationships

Ally

🏷️John McCarthy　The two co-edited the 1956 collection Automata Studies 🔁Norbert Wiener　Information theory and cybernetics were born almost contemporaneously, the two’s theories together shaping the mathematical basis of later digital communication and automation systems

Echoes today

Below are how modern works borrow or reinterpret this name or story — not the original material. The two differ, so keep them apart.

The "bit" as the basic unit of the digital ageThe "bit" concept Shannon proposed is to this day the basic unit by which almost all digital devices and communication systems measure information, one of the most fundamental and least noticed technical legacies of the information age.

Appears in

"Can Machines Think?" — The Birth of AITuring’s Question and the Dartmouth Conference

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