Add "diagnostics skills"

Day3/Session1/DiagnosticsSkills/README.md

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+# Diagnostics Skills
+
+## Convenors
+
+* Mary Gouseti
+* Marc Hoffmann
+
+## Notes
+
+### Social
+
+* If you need "Heros": Is this a smell?
+* Development skills != Diagnostic skills
+* Reduce the stress by putting the right people in the room with clear roles
+
+### Preparation
+
+* Get famliliar with the normal behavior and values
+* Simplify architecture and code
+* Training on scenarios (fire drills)
+* 80% common symptoms, 20% exceptional
+* Have predefined resolutions for common symptoms
+* Smaller increments to narrow down the changes
+
+### Resilience
+
+* Transparency
+* Build trust
+* Stress stops learning - need to know your toolset
+
+### Tools
+
+* Practice tools
+
+### Process
+
+* You have to be prepared
+* Process for the less experts
+* Dedicated communication person
+* Stop the phones from ringing
+* Emergency ???, reduce the impact
+* Apply scientific methods
+* De-briefings, Feedback
+* Write down: Timeline, your analysis so far
+* Observe the signals
+* Listen to the hardware
+* Finding the source of the problem
+* Top view to find the target
+* Learn from other disciplines, Medicine
+* Bring the people in a room
+* Exceptions, Saturation, Utilization, Starvation
+* Code is the last thing you look at
+* Collect data and learn from it
+* Cheap information first
+* Rule out causes
+* It is not your job to solve everything
+* If you can't have a holistic view you might have an organization problem
+
+