Supporters of the "establish context" rule include: Jimbo Wales, Larry Sanger, LDC, Tim Shell, Linus Tolke, Janet Davis, drj (strongly), Koyaanis Qatsi, GWO, Damian Yerrick, tbc, AxelBoldt, JHK, Enchanter, Tarquin, Rotem Dan (strongly), 168... (strongly) Neutrality (strongly)
Opponents include: 24
24 - no one does this. Look at ontology, the worst example I know. People just say "this is that" and then proceed... some of the first paragraphs bother to set up context, but not many. So I don't like this as a rule, although I do it wherever I can.