Thoughtworks' CTO says the next bottleneck is human attention

Laycock's argument is a correction of her own prior position, stated as one: "I kept assuming it would simply move to the next phase of software delivery. I was wrong." Where it lands: "AI didn't change what great software looks like. It changed what's scarce. Human attention is now the bottleneck." The counts are the reason to read it. "I was talking to an engineer recently who told me they regularly have eight AI agents running in parallel. I've heard similar numbers from others. Ten. Twelve. Beyond that, they become the bottleneck." Those figures are second-hand and unattributed, and Laycock frames the venue as "where I capture ideas before they're fully formed," so they are reported here as one CTO's reported observation, not a measurement. The conductor metaphor is defended against the obvious deskilling reading: the orchestra "needs the conductor because someone has to hold the whole system in their head."

Why it matters: An agents-per-human ceiling is the load-bearing question for anyone costing out a mostly-autonomous team, and it is usually asserted with no figure at all. Read hers carefully: eight is the count she was told one engineer runs routinely, and she puts the ceiling somewhere past ten or twelve. One CTO relaying other people's numbers is a prompt for your own measurement, not a planning input. The consequence she draws is the unusual part: the fix is not better tooling. "We're redesigning the tools, but we haven't started redesigning the job." Karpathy's agent could not check its own screenshots; this is the argument about what that checking costs the person who does it.