diff --git a/book/src/impl-rs/process.md b/book/src/impl-rs/process.md
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--- a/book/src/impl-rs/process.md
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@@ -1 +1,23 @@
 # Development Process
+
+# Adding New Features
+
+To keep Canary as minimal as possible we adopt a conservative policy for what
+features are added to its specification. This is to avoid the feature-creep that
+plagues large UI and UX frameworks in the long run. The following reasons are
+general guidelines for what features should and should not be added to Canary.
+
+## Reasons to add a feature
+
+The feature provides a clear benefit to a cultural class of users. For example,
+Arabic speakers will require that text can be rendered right-to-left.
+
+The feature reduces the resource usage of scripts.
+
+## Reasons NOT to add a feature
+
+The feature adds more complexity to the host than is removed from scripts.
+
+The feature only applies to certain host configurations.
+
+The feature can be effectively emulated in a script.