The common ones
Coordination cost, in questions
Why does AI make individuals faster without speeding up delivery?
Because production got cheaper and review did not. Faros AI's 2025 telemetry study of more than 10,000 developers found teams with high AI adoption completing 21% more tasks and merging 98% more pull requests, while the time work spent waiting for review rose 91%. The queue absorbs the gain before it reaches the customer.
What is coordination cost?
It is everything that happens to a piece of work while nobody is working on it: waiting for a review, an approval, an answer, or the one person who has to look at it. In most workflows it is the majority of the elapsed time, and it appears in no report because your tools count activity rather than waiting.
How do I measure coordination cost in my company?
Follow one typical piece of work with a stopwatch. At each step note when it arrived, when somebody started, when they finished, and when the next person picked it up. Add the working hours and the waiting hours separately, then put the two totals next to each other. That ratio is your answer and it usually takes one afternoon.
Why did our AI investment not reduce lead time?
Because the speed-up applies to the hands-on part of the work, and in most workflows the hands-on part is the smaller half. If five people touch a piece of work with two hours of work and eight hours of waiting at each step, making the work 21% faster moves the total by about 4%. Your customer will not notice that.
What happens to code review when developers use AI?
It becomes the bottleneck. Faros measured pull request review time up 91% in 2025, with pull requests 154% larger and bugs up 9%. In their longer 2026 analysis of 22,000 developers, median review time was up 441.5%. More arrives at the reviewer and the reviewer did not get faster.
Is the AI coordination problem only a software problem?
Software is where it is easiest to measure, because every step is timestamped. The same shape shows up wherever one station speeds up and the next one does not: proposals waiting for approval, claims waiting for assessment, copy waiting for legal. The mechanism is a queue, and queues are indifferent to industry.
How do you know who in the chain is actually creating the queue?
The queue is usually made of review and approval, so it is a people question. emaho measures one
Operating Profile per person, personality type and AI level in a single profile, which shows who can review quickly and confidently and who is holding work because they are not sure what to look for.
How do I fix the review bottleneck without hiring?
Attack the biggest single wait rather than the whole process. Batch reviews into two fixed moments a day instead of whenever they arrive, protect a slot in the reviewer's calendar, and decide which categories of work can skip review entirely. Then agree on a shared format so the reviewer stops rebuilding their expectations for every item.
Why does a shared way of working reduce review time?
Most of what a reviewer spends time on is working out what they are looking at. When everyone drafts in the same structure, that part disappears and only the judgement is left. This is why documenting the method has a bigger effect on lead time than any tool, and it is what separates Level 3 from Level 2 in the emaho AI Culture Levels.
Does more AI output mean more bugs?
The measured answer so far is yes. Faros found bugs up 9% in the 2025 study, and across two years of data bugs per developer rose 54% with incidents per pull request rising sharply. When review capacity stays flat and volume doubles, less gets caught, and what does get caught arrives later.
What single number should I track for this?
Request to delivered, for one workflow, measured monthly, with the definition held still. Everything else can be gamed by whoever produces the most visibly. If your AI investment is doing anything a customer can feel, it shows up in that one number, and if it never moves you have learned something useful.
Who is responsible for coordination cost?
Structurally, nobody, and that is what makes it expensive. The writer is measured on output, the reviewer on thoroughness, the manager on their team's throughput. Every part of the chain is doing what it was asked to do while the whole gets slower, so there is no individual to correct and no natural owner of the total.
How does this relate to AI maturity levels?
Level 2 of the
five emaho AI Culture Levels buys individual speed: everyone is faster at their own step with no shared standard, which is exactly the pattern in the Faros data. Level 3 buys flow, because the way of working is written down and review stops being an act of interpretation. About a quarter of organisations sit at Level 2 and roughly one in ten at Level 3.