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This is where it gets good Combining our calculations for the Student Greenhouse Field and our observations of which paths have become dirt tracks -- just one -- we can make a guess at the "dirt path" threshold. We've done so in the chart to the right, including the apparent threshold as a yellow line. How does that work? Path 7, analogous to curve D1 on the earlier diagram, is attractive to some pedestrians -- but not enough to form a dirt path, we can observe empirically. Path 6, like curve D2, exceeds the threshold and a path is formed. So, does the same threshold apply to the IM East field, an entirely new case that our model has not been optimized for? Take a look at the chart included on the left if you haven't already. The answer is yes -- path 6 and path 6 alone has been worn into a muddy rut. It is exactly as predicted by the model. I thought you said it got good >> |