Quality in housing construction is affected by the extent and thoroughness of debugging…because supervision time in the field is a limited resource.

For example, suppose that over the course of a two-year construction project…a total of 500 decisions must be made, items checked, and directions taken that will result in a smooth and efficient construction process.

If people in the field get 300 of those 500 issues resolved upfront through a company-wide debugging program…before the construction starts…then only 200 issues and questions remain to be solved individually during the construction.

There is a finite numerical limit to the issues and questions that need to be addressed on every building construction project…irrespective of the magnitude of each issue or question.

Therefore, if 350 problems and questions out of the 500 are easily answered upfront through constructability analysis and a checklist of past solved issues…then only 150 real problems remain to be solved during the construction.

If at the outset of the project…there are 400 easy solutions and answers to the original 500 problems…then only 100 more remain to be analyzed and resolved during the construction.

The greater the number of problems, questions, and bugs that can be identified upfront and quickly and correctly resolved…the fewer the number of problems remain to be confronted and solved during the construction…and the more time is made available for genuine quality-control rather than spent in frantic “putting out fires.”