Add another sensemaking article

doc/development/open-questions/index.mdwn

@@ -157,7 +157,8 @@ Discussion of metacognitive strategies that could have computer aides.
       lack of information. To make use of this in metacognition, you need to
       look for more information after the guess, not incorporate the guess as
       the final answer.
-- Sense-making
+- Sensemaking
     * <https://en.wikipedia.org/wiki/Cynefin_framework>
     * <https://medium.com/@cwodtke/five-models-for-making-sense-of-complex-systems-134be897b6b3>
     * <http://ahiddendiscourse.com/2013/02/17/the-cognitive-basis-for-academic-workflows/>
+    * <https://nautilus.org/gps/tools/sense-making-and-mind-mapping-tools/>