A lengthy executive order on artificial intelligence signed Monday by President Joe Biden is expected to give a big boost to AI development in Silicon Valley. Bay Area experts say the guidelines and government oversight promised in the order, a whopping 20,000-word document, will lend confidence to significant numbers of potential business customers who have not yet embraced the technology, which Silicon Valley companies have been furiously developing. Organizations of virtually every kind have been “kicking the tires” on the technology but are holding off on adoption over safety and security ...