Most conversations about AI start with substitution: Which task can the machine take over? That question is sometimes useful, but it is too small. The more important question is: How should the whole system work now that people can call on machine intelligence at near-zero marginal cost?
Well-designed collaboration can increase speed and widen the set of options a person can consider. It can also transfer useful patterns to less-experienced workers. In a large field study of customer-support agents, access to an AI assistant increased productivity by roughly 15% on average, with the largest gains among less-experienced and lower-skilled workers. The same study found much smaller gains—and some quality tradeoffs—for the most experienced workers. That is a useful warning: AI does not improve every person, task, or outcome in the same way.
