I think this is part of it but the main metaphor is more like “your model has no hand-wavy-ness. There are clear reasons that the parts connect to each other, that you can understand as clearly as you can understand how gears connect to each other.”
I think this is part of it but the main metaphor is more like “your model has no hand-wavy-ness. There are clear reasons that the parts connect to each other, that you can understand as clearly as you can understand how gears connect to each other.”