:What evolutionary usefulness does it have, as opposed to other sorts of usefulness? That is, how does vomiting help evolution? [[User:Philip J. Rayment|Philip J. Rayment]] 20:41, 10 March 2008 (EDT) | :What evolutionary usefulness does it have, as opposed to other sorts of usefulness? That is, how does vomiting help evolution? [[User:Philip J. Rayment|Philip J. Rayment]] 20:41, 10 March 2008 (EDT) |