> it's almost always possible to reason and quantify and weigh the cost versus the benefits I don't think so. As a pretty good analogy, can you quantify the b

> it's almost always possible to reason and quantify and weigh the cost versus the benefits I don't think so. As a pretty good analogy, can you quantify the benefit of replacing knob-and-tube wiring in an old house? Now consider that the house across the street keeps its old wiring for the next twenty years without anything bad happening.