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+# VM thoughts
+
+We want numbers and bools as unboxed as possible.
+
+Nil is a singleton, and should be static.
+
+Strings come in two flavours:
+* String literals, which are static/interned.
+* Constructed strings, which should be `Rc<String>`
+
+Keywords are static/interned.
+
+Tuples should be refcounted for now.
+
+