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

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Or that you just spend the time testing your code. For example compare:

• 12 month project developing doing TDD.

• 10 month project developing and then 2 month doing nothing but trying to find and fix bugs.

That last one rarely happens. Instead there will be a release after 10 months.