Martin Casado, general partner at venture-capital firm Andreessen Horowitz, says concrete risks from the artificial intelligence boom haven't materialized. Casado spoke with WSJ global tech editor Jason Dean about the U.S. government’s stance on AI policy and the outlook for investing in the space at WSJ Tech Live. Plus, scientists and engineers are working to build more efficient electric motors using a technology pioneered by Benjamin Franklin. Zoe Thomas hosts. 

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