For those evaluating the ROI of directing Bill's developer focus, this document compiles quantified measurements to help inform judgement.

linkBy Diff Delta

Since more than 95% of code line changes are effectively noise, Diff Delta is gradually becoming the empirical standard for quantifying the amount of progress of changing code.

Following is a live graph of Bill's Diff Delta over the past 15 years. The current year is projected.

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For the 6 years after stepping down as the CEO of Bonanza, Bill's median annual Diff Delta is 194k. This reduces to 776 per business day. For comparison, a median open source Google developer averages 60 Diff Delta per day. A 95th percentile Diff Delta developer delivers 547 per day.

linkBy Commit Count

Since Bill has been largely responsible for creating Diff Delta, let's analyze another prevalent "developer counting" metric, Commit Count. According to a statistical analysis of 578,917 developer-years of GitHub activity, a 99th percentile developer on GitHub makes 4,307 commits per year.