The “road to normalcy” is not a real road; you won’t find it on Google Maps. It’s more of a concept, and at present, a concept that looks like an aspiration in need of affirmation. If it were a real road, you would probably want four-wheel drive. Things have gotten a little bumpy. The macro-economic thoroughfare that, by now, should be smoothly paved with growth and prosperity has developed a few potholes that have generated renewed speculation about just how much longer construction will need to continue. This week’s news provided very little help to those trying to gauge exactly when Janet Yellen’s road crew will allow travel to normalcy; that place where interest rates are above zero.