sentence: Categories only contain actual pages, whereas lists can contain red links.
sentences_after: Also, categories are there for a different purpose, namely hierarchy-type searches. In any event, we have many lists which are paralleled by categories, and we are surely not going to cut them all. If you want to say this is a rotten list and ought to be improved, I agree absolutely, but it depends on our acquiring someone interested in working on physics.
concept_name: category
headings: Wikipedia:Requests for deletion/Requests/2011/List of physics topics null List of physics topics Discussion