Much of what we do at work can be seen from two sides. To really learn how to do your job, find a way to get to the other side.

Failures in distributed systems are not bugs, they are features. Don’t worry about preventing errors, focus on isolating them. Focus on speed of detection and fixing.

Action is necessary, but not sufficient for mastery. ‘Mindful’ action is the key. Conscious practice builds subconscious competence.