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...the one stat in the summary that I find most compelling is the defect rate. I have now delivered three business critical projects written in F#. I am still waiting for the first bug to come in. This is not the case with the C# projects I have delivered. I will continue to monitor and report on this. It might be that I am just on a lucky streak, but I suspect that the clarity and concision of F# code contributes greatly to its correctness.