Comment by lostcolony

"The people most capable of taking the action items are assigned it. This could be expertise, resourcing, proximity, etc."

Expertise and proximity are facets of responsibility (well, technically they are facets of knowledge, but ideally knowledge, empowerment, and responsibility are aligned, else things ALSO won't get done). Resourcing is a red herring; I've seen things get assigned to teams based on "they have the capacity", without it being an area whose domain they're familiar with (i.e., they don't work in that area, and ergo are not responsible for the outcome) - those things rarely get done, and never get done well.