PPT Slide
About 90% of the downtime comes from, at most, 10 percent of the defects
Disciplined personal practices can reduce defect introduction rates by up to 75%
All other things being equal, it costs 50% more per source instruction to develop high-dependability software products than to develop low-dependability software products. However, the investment is more than worth it if the project involves significant operations and maintenance costs
About 40-50% of user program contain nontrivial defects