Loop Engineering = Agent版PDCA
To really understand Graph Engineering, it helps to first get a solid grasp of Harnesses and Loops.
Think of a Harness as project governance + delivery workflows + permission boundaries. Looping is basically the PDCA cycle—the continuous Plan–Do–Check–Act process widely used to improve project management.
Having worked in project management before, I immediately understood what they were getting at. At its core, this is project management theory.
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