The δeltas newsletter February 17th Three management insights for 2026 ↓ The CTO leaned forward. “We just finished performance reviews,” they said. “One of our managers got curious and pulled token usage data. You know, how much each engineer was using AI.” I expected some hand-wavy correlation. Maybe top performers used it more. Maybe it didn’t matter at all. “Turns out,” they continued, “our best performers used the most tokens. Good performers? More than average.” They paused. “And some of...