“The need for reviewing was so obvious to the best programmer that they rarely mentioned it in print, while the worst programmers believed they were so good that their work did not need reviewing” – Daniel Freedman and Gerald Weinberg
IBM found that every hour of code inspection saved 100 hours of related work (Code Complete, p.480). Pair programmers produce higher quality, more maintainable, code in only 15% more time than an individual (Pair Programming Benefits), and inspected systems require 1/10th the maintenance of non-inspected systems (Code Complete, p. 485).