It is insistence on fragmentation for the sake of personal pride rather than incorporation for the sake of God's kingdom. Do you remember the vegetable juice commercials of a few years ago. People were portrayed realizing they'd made a mistake. Of course you have. We all, at some time or other, make foolish choices.
Foolish decisions take one of two forms.
First, inhibited by fear, we pass up an opportunity because at the time the risk seems too great or the price is more than we're prepared to spend. Later, when it's too late, we realize that we missed a singular opportunity. Mankind has also long been prone to a second kind of folly. It is so easy to be careless with the long term intangible promise represented by something like a birthright, especially when you are famished. This is the kind of foolishness we engage in when we surrender something that really matters to take hold of a shiny bauble, a passing fling.