Bill Lummis
Jeff Atwood"The first 90 percent of the code accounts for the first 90 percent of the development time. The remaining 10 percent of the code accounts for the other 90 percent of the development time." https://en.wikipedia.org/wiki/Ninety%E2%80%93ninety_rule
Timothy Wolodzko
Gavin Chait;@codinghorror And then the last 1% of the work accounts for the final 90% of the time.