Ninety-Ninety Rule


Ninety-Ninety Rule

(humour)"The first 90% of the code accounts for the first 90%of the development time. The remaining 10% of the codeaccounts for the other 90% of the development time".

An aphorism attributed to Tom Cargill of Bell Labs, andpopularised by Jon Bentley's September 1985 "Bumper-StickerComputer Science" column in "Communications of the ACM". Itwas there called the "Rule of Credibility", a name which seemsnot to have stuck.