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Full Idea
Nothing can count as a mechanism unless it produces some macro-level regular behaviour. To produce macro-level regular behaviour, it has to rely on micro-level regularities.
Gist of Idea
Mechanisms must produce macro-level regularities, but that needs micro-level regularities
Source
Bert Leuridan (Can Mechanisms Replace Laws of Nature? [2010], §5)
Book Ref
-: 'Philosophy of Science' [-], p.18
A Reaction
This is the core of Leuridan's argument that regularities are more basic than mechanisms. It doesn't follow, though, that the more basic a thing is the more explanatory work it can do. I say mechanisms explain more than low-level regularities do.