The popularity rating of harness explained

Github Repository Rubygem
The highest rated repository is rails/rails with 30890 watchers and 12525 forks, resulting in a Github score of 99.99 The highest rated Rubygem is rake with 111305426 total downloads
These are the references for the score, marking the popularity of 100%
Now, the repository for harness over at twinturbo/harness has got 134 watchers and 10 forks, resulting in a Github score of 0.39 Now, the gem harness has got 73954 total downloads
Therefore, the relative popularity percentage can be calculated for harness
0.39 watchers & forks * 100% = 0.20%
99.99 top score
73954 total downloads * 100% = 0.07%
111305426 top score
The average of those two values results in the score:


So, assuming everyone is using the most popular projects,
roughly one out of 100 Rubyists use harness

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