Related:

• The first 90% of a project takes 90% of the time, the last 10% takes the other 90% of the time.
• 90% of the work takes 90% of the time. The remaining 10% takes the other 90% of the time.
• Ninety-Ninety Rule n. "The first 90% of the code accounts for the first 90% of the development time.
  The remaining 10% of the code accounts for the other 90% of the development time....
• Ninety-Ninety Rule of Project Schedules: The first ninety percent of the task takes ninety percent of the time, and the last ten percent takes the other ninety percent.
• Ninety-Ninety Rule of Project Schedules: The first ninety percent of the task takes ten percent of the time
  he last ten percent takes the other ninety percent....
• Ninety-ninety Rule of Project Schedules The first ninety percent of the task takes ninety percent of the time, and the last ten percent takes the other ninety percent.