diff --git a/existence.md b/existence.md
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+++ b/existence.md
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+# Existence
+
+- What is existence, anyway?
+
diff --git a/place.md b/place.md
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+++ b/place.md
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+# Place
+
+- An [[Agora]] is a [[place]].
+- A possible context for [[existence]].
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[place]: place "Place"
+[existence]: existence "Existence"
+[//end]: # "Autogenerated link references"
\ No newline at end of file
diff --git a/places.md b/places.md
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+# Places
+
+
diff --git a/solutions.md b/solutions.md
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+++ b/solutions.md
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+# Solutions
+
+- The [[agora]] is a repository of [[problems]] and [[solutions]].
+- Not all [[solutions]] are feasible, or otherwise correct. But they all belong in the [[agora]].
+- Solutions are [[algorithms]] that encode pragmatic [[knowledge]] about the [[world]].
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[agora]: agora "Agora"
+[solutions]: solutions "Solutions"
+[//end]: # "Autogenerated link references"
\ No newline at end of file
diff --git a/stack-overflow.md b/stack-overflow.md
index 728131b0c..68a4baf60 100644
--- a/stack-overflow.md
+++ b/stack-overflow.md
@@ -1,5 +1,4 @@
 # Stack Overflow
 
-- Essentially a crowdsourced repository of programming problems and solutions, by and for [[programmers]]. Nominally a Q&A site.
+- Essentially a crowdsourced repository of programming [[problems]] and [[solutions]], by and for [[programmers]]. Nominally a Q&A site.
 - Nodes that are questions in the Agora could very well work like [[stack overflow]]. Or just redirect to a [[stack exchange]] site.
-
diff --git a/universe.md b/universe.md
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+++ b/universe.md
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+# Universe
+
+- The [[universe]] is the set of [[place]]s that can be experienced.
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[universe]: universe "Universe"
+[//end]: # "Autogenerated link references"
\ No newline at end of file
diff --git a/world.md b/world.md
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+++ b/world.md
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+# World
+
+- Our shared [[reality]].
+- Sometimes a stand-in for [[universe]].
+