# For Optional values: waits until non-None and narrows the type
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The prolific tech financier, famous for his early investments in Uber and Zillow, is skeptical that the government could pass AI regulation or pull off a massive reskilling effort. So as the technology continues to automate traditionally stable and lucrative roles, like lawyers and software engineers, it’s imperative that workers actually be invested in their profession—or risk facing the chopping block.，更多细节参见safew官方版本下载
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