Yusuf Mehdi, executive vice president and consumer chief marketing officer at Microsoft, speaks at a company briefing in Redmond, Wash., on May 20, 2024. Microsoft unveiled a new category of PC that features generative artificial intelligence tools built into Windows, the company's world-leading operating system.The euphoria around artificial intelligence is colliding with the limits of reality, and cracks are emerging.Last night, tech giants like AMD smashed expectations on AI chip demand, and Palantir rep ...