Last week, I attended a gathering of economists and data scientists from major tech companies, all focused on how technology is reshaping business and work. Practitioners swapped insights on everything from labor market trends to AI experiments. The AI revolution promises to upend how we work and this is happening against the current backdrop of the “pause economy” with hiring and investment in a cautious lull. The discussions ranged from the cooling tech job market to cutting-edge methods in causal inference and AI measurement, and deeper questions about whether AI is a substitute for human work or a “bicycle for the mind.”