Three agents finish in parallel. Main takes one landing at a time. METR's RCT: devs ran 19% slower with AI and estimated 20% faster. Now run that error three ways at once. Writing code got parallel. Landing stayed serial. heyvaldemar.com/merge-debt-2...
Merge Debt: The 2026 Bill Your Parallel AI Agents Are Running Up | VALDEMAR
Three agents finish in parallel. Main takes one landing at a time. METR's perception gap, the rebase tax, and why Merge Debt is the number nobody plots.
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