How close is close enough?
A geocoder turns an address into a point, and the obvious thing to ask is whether the point is right. That question has no answer, because "right" assumes a single tolerance and there isn't one. A point that is right enough to tell you which county regulates this facility can be uselessly wrong for routing a truck to its loading dock. The question that does have an answer is the one the operator keeps coming back to, and the one this page is about: close enough for what?