Wikipedia:Articles for deletion/Relations on a set of four elements
If nothing that is provable in principle can be OR, then we have no OR in mathematics (we still have factual error). This, however, has the disadvantages of OR: |Wikipedia is not a scratchpad
— User:Pmanderson, 23:35, 17 May 2007 (UTC)
Stance: comment
Cited policy: WP:NOT (Wikipedia:What Wikipedia is not)