Maybe this will help, I hope !!! When you build a table it usually has 4 legs. When you build a chair it usually has 4 legs. 4 is the representation of stability in the natural world. One can logically say that whatever I build will be the most stable if it has 4 legs, right? Wrong!!! The dream as well as the spiritual world sometimes has little to do with the natural order of things. Life is not even, perfect, or sound, When a 4 legged object is placed upon an uneven surface it is not sound. When a 3 legged object is placed upon the same surface it is solid despite the differences of surface. In Wicca, 3 seekers together have more power than 2. In solving a crime, it takes 3 to complete a case, victim, perpetrator, and witness. In the spirit world 2 is not stable and can even represent duality but 3 represents solidity whilst 4 is unnecessary. There is a definite science behind these theories as well as a spiritual conformity. All spirituality is scientific although some sciences are not yet accepted in mainstream culture as of yet.