When two sisters marry, they grow apart , since their allegiances lie with new families. Though they will remain close enough to successfully deal with minor problems and share minor interests, they will be unable to undertake any great projects together. This is the image of estrangement pointed to now. Simply put, when people are estranged -- even for the most natural of reasons -- their points of view, values and interests diverge.
Divergent natures and interests bring opposition into the world of human affairs. When opposition drifts into alienation and enmity, no good results. But when opposition takes the form of healthy competition, or when it is simply part of the natural order of things and is recognized as such, good fortune is possible.
