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                Profit is the supreme metric from which all other metrics are
                derived. Once I'd learned that and exited the big company I
                re-entered the startup game as a participant. I was spoiled by a
                plethora of data at PatientFocus that allowed for really robust
                testing of the machine learning system we affectionately called
                "Mike" after the AI in Heinlein's The Moon is a Harsh Mistress.
                Automated testing and rebuilding of the models on a daily cycle
                really allowed me to hone my lean skills, although I'd internalized
                them to the point where I wasn't always using the terminology in a
                way the business totally understood.
               
              
                Fast forward to today when I'm working on building my second
                SaaS startup in much less data-rich environment. The founders,
                Gary & Robbie, are really well read and recommended that I
                finally go read Eric Ries' book. Gary often has the same read-a-book-about-it
                approach to learning that suits me as well. I was not disappointed
                revisiting Reis' ideas with more startup experience under my belt.
               
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