User blog comment:Len Vennyson/Mark of Minerva ( I mean Athena)/@comment-3548501-20111104211600/@comment-4445568-20111106182814

In a way you are both wrong. You can have less than two companions or more than two. It is advised to have two because 3 is a sacred number, 3 furies, 3 fates, 3 graces, The big threes, etc.