Some initial notes on postrin path design

docs/design/postrin-path.md

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+# Postrin path design:
+
+## Negtrin and postrin weighting:
+
+I am skeptical that treating negtrins and postrins as having equal importance
+will produce a working system.
+
+### Frustrator Negtrin model: Postrins as intrinsically desirable:
+
+In the frustrator model, postrins are intrinsically desirable and negtrins are
+only grasped as important in that they forcibly direct Drctr's attention away
+from its sampling/pursuit of a postrin. Because of this they're grasped as being
+bad because they frustrate the intrinsic goal of pursuing/sampling a postrin.
+
+### Equiprioritized intrin model:
+
+In this model