Related:

• The Briggs/Chase Law of Program Development: To determine how long it will take to write and debug a program
  take your best estimate, multiply that by two, add one, and convert to the next higher units....
• God is a comic playing to an audience that's afraid to laugh.
  To determine how long it will take to write and debug a program, take your best estimate, multiply that by two, add one, and convert to the next higher units....
• Estimate the time you think it should take, multiply by 2, add 3, and change the unit of measure to the next higher unit.
  Thus we allocate 2 days for a one-hour task. -- Westheimer's Time Estimation Rule...
• Westheimer's Time Estimation Rule: Estimate the time you think it should take, multiply by 2, add 3, and change the unit of measure to the next higher unit.
• Westheimer's Time Estimation Rule: Estimate the time you think it should take, multiply by 2, and add 3, indpendent of the units of time.
• Westheimer's Rule: To estimate the time it takes to do a task, estimate the time you think it should take, multiply by two, and change the unit of measure to the next highest unit.
  Thus, we allocate two days for a one-hour task....