diff --git a/doc/development/open-questions/index.mdwn b/doc/development/open-questions/index.mdwn
index 0d5ab4695..d015d99ee 100644
--- a/doc/development/open-questions/index.mdwn
+++ b/doc/development/open-questions/index.mdwn
@@ -54,3 +54,9 @@
 # Metacognition
 
 Discussion of metacognitive strategies that could have computer aides.
+
+- During writing, indicators for reading level, sentiment analysis, use of
+  metaphor:
+    * <https://en.wikipedia.org/wiki/Readability>
+    * <https://en.wikipedia.org/wiki/Sentiment_analysis>
+    * <https://en.wikipedia.org/wiki/Politics_and_the_English_Language>