Some companies already are scoring an AI win. Artificial intelligence (AI) stocks have driven double-digit gains in the S&P 500 over the past three years, with names such as Nvidia (NVDA 0.43%), Alphabet, and Palantir Technologies soaring. Investors have piled into these and other companies developing or using AI in an effort to get in...

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Yann LeCun reckons the young executive Alexandr Wang has "no experience with research or how you practice research, how you do it."