Merge pull request swcarpentry#172 from gvwilson/144-scorecard

Starting to keep score of what we don't do

_extras/discuss.md

@@ -15,4 +15,18 @@ we would welcome additions discussing:
 *   other forms of assessment
 *   an overview of research on novice programmers
 *   problem-solving skills overview
-*   setting expectations in the classroom/promoting effective study habits
+*   setting expectations in the classroom
+*   promoting effective study habits
+
+We would also appreciate additions to this list of things we *don't* do,
+and explanations of why not:
+
+peer instruction
+:   This powerful teaching method has been proven effective,
+    but we are already asking workshop participants to assimilate a lot of new things,
+    and picking up a new learning technique while learning the basics of coding and data wrangling
+    seems too much to ask.
+
+certification
+:   Many people have asked us to certify workshop participants in the same way that we certify instructors,
+    but any meaningful certification process would require a lot of resources to set up and run.