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5. Areas that are often covered in deep snow. If "curbs" are defined as the raised area next to the street that you can't drive over, then the curbs change fro
by jpindar 12y ago
5. Areas that are often covered in deep snow. If "curbs" are defined as the raised area next to the street that you can't drive over, then the curbs change from one day to the next, jutting far out into the lane. And the number of lanes also changes - two lane roads often become one lane, either due to lack of room between the snow piles or because drivers on some roads spontaneously form a single file down center of what used to be two lanes.
- dredmorbius 12y agoChange is a crucial factor to consider in any long-lived system. Douglas Adams had a few words about it in The Hitchhiker's Guide to the Galaxy. It's relatively easy to create a first-time-through map of something. You simply record everything you see (or thought you saw). On revisiting, there are now questions of: • Was that here the first time? • Did it move? Was it mismeasured? • What about the stuff that's recorded that we don't see? Early cartogrophers (as well as researchers in conceptual fields) often mistakenly create or record features where none actually exist (or at least no subsequent evidence is found). Often the ghosts of these features haunt maps (or textbooks) for centuries. Essentially, you need a map, ultimately, which has a sense for the permanence of any highway feature, and to not fall prey to map-territory relation assertion fallacies: http://en.wikipedia.org/wiki/Map-territory_relation http://en.wikipedia.org/wiki/Map-territory_relation The map is not the territory.