One problem he doesn’t mention is what I call our failure to recognize and account for the “spaces in between”. While is is at time possible (possible not necessarily probable) to continuously work on a task uninterrupted what happens when you complete that task and get ready for the next task in your queue of tasks. The get ready part, whether mental or physical or mental takes time. We need to learn how to account for the time in-between tasks too.
Taking into consideration the Planning Fallacy while an important rule is not the Golden Rule of Estimating in my book. Years ago Bob Kovacs introduced me to “The Golden Rule of Estimating” according to Richardson Engineering Services General Construction Estimating Standards which is…
—“Consider not only the cubic foot, cubic yard, lineal foot, square foot, pound or ton but all of the complicating conditions encountered in putting the materials in place.”—
All contractors make the mistake of underestimating the time required for a project. A look at how contractors can use the planning fallacy to get paid more and start providing better estimates.