A Kind of Survey

If you are walking on a sidewalk, you need to know where the holes are. Holes could be a change of level, like one section of cement shifting a bit. It could be a crack where a truck had an intimate off road adventure. You need to know where the holes are, but you do not walk looking down, that way, you would see nothing. Jan Cox spoke about how people do not look up, as an aspect of mechanical behavior. You must look around, at least internally, as much as possible. That's your best chance to predict, the unpredictable -- sinkhole. Knowing where the holes are is one major distinction between the natural sciences and the mystical. The former do not even see the need to know, where the holes are.