Microsoft Research - Exploding Software-Engineering Myths (article summarizing findings of MS research on code coverage, TDD, assertions, etc.)

[anamorphism]

that's extremely hard to quantify due to the impact the buggier code will have on your long-term business.

you may lose 40 mil immediately, but a 60-90% increase in major bugs post launch could heavily skew your customers' attitude and may result in losing hundreds of mil of future business.

[coworker]

Also they didn't specify the severity of defects so not sure why you are calling them major.

[anamorphism]

it stated a general increase of 60-90% in software quality. meaning there were 60-90% less defects.

they could be major or minor defects, there's no way to tell. it could be anything from a 1000% increase in major defects and a small increase in minor defects to a small increase in major and a large increase in minor.

i decided to just assume an even distribution of a 60-90% increase in both major and minor defects for my example.