Shuttle software: "the last three versions of the program -- each 420,000 lines long-had just one error each. The last 11 versions of this software had a total

Shuttle software: "the last three versions of the program -- each 420,000 lines long-had just one error each. The last 11 versions of this software had a total of 17 errors. Commercial programs of equivalent complexity would have 5,000 errors." http://www.fastcompany.com/28121/they-write-right-stuff http://www.fastcompany.com/28121/they-write-right-stuff