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@@ -11,5 +11,12 @@ Reserved for the Mooc's logbook
 "*" and "_" both make text italic
 "**" and "__" both make text bold
 
-# Replicable analysis best practise
-- Never alter the data file manually, data should always be edited by code !
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+# Replicable analysis best practise - Module 3
+- Never alter the data file manually, data should always be edited by code !
+- Read data directly from source.
+- A replicable analysis:
+    - must contain all of the data processing steps in an executable form.
+    - it's important to explain all choices that might impact the results.
+    - Expose many technical details, only then other readers can verify the work with us.
+- A year has always more than 7x52 days.
+- 
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