diff --git a/.gitignore b/.gitignore
index e64627a3d..293ed61c7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,9 @@ dist
 *.sln.docstates
 #draw.io backups
 *.bkp
+#other backups
+*bak
+
 
 # User-specific files (MonoDevelop/Xamarin Studio)
 *.userprefs
diff --git a/1-Introduction/3-fairness/DanNotes.txt b/1-Introduction/3-fairness/DanNotes.txt
new file mode 100644
index 000000000..0f0f22fbc
--- /dev/null
+++ b/1-Introduction/3-fairness/DanNotes.txt
@@ -0,0 +1 @@
+Microsoft developed a Responsible AI Standard. It's a framework for building AI systems according to six principles: fairness, reliability and safety, privacy and security, inclusiveness, transparency, and accountability.
\ No newline at end of file