We humans construct models--maps, hypothesis, superstitions--to try to describe reality.
We are even more prone to doing these things when under duress, and thus once sickness was described as evil spirits (that could be sneezed out and invade others), and though these models can be useful (I personally like maps a lot), they aren't reality.
When we are talking about human relationships (because, let's face it, human behavior isn't well understood), simple models (e.g. newtonian physics) don't really do a good job as a map.
M-47,W-40,No kids D-filed 5/27/2010 Piecing - 10/21/2010 -=Soon to be banned=-