AlphaGo played a move experts first thought was a mistake — and it won the game.

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In game 2 against Lee Sedol in 2016, AlphaGo’s “move 37” was so unusual that commentators were puzzled; AlphaGo itself estimated a human would play it about 1 time in 10,000. It proved decisive.

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The image dataset that kick-started the deep-learning boom was labelled by crowd workers.AI research has gone through “winters”.The “T” in ChatGPT stands for Transformer — from a 2017 paper about attention.