"If you are an engineer worried that AI will eliminate engineering jobs, our evidence says AI adopters are hiring engineers faster, not slower. Learn the latest technology to best position yourself for high-intensity AI adopting firms."
This is the most relevant bit for me. Thank you for sharing.
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I expect you would find that companies that historically invest more in R&D or cap-ex tend to hire more in the following two years, regardless of the form of that investment. It doesn't look like the paper made any effort to control for different forms of R&D or cap-ex.