Saying

Linus's Law

Given enough people looking at the code, every bug becomes obvious to someone.

How to use it. True for popular open source projects on common code paths. Code review and pair programming use the same idea on a smaller scale.

How it gets misused. As a reason not to test. The Heartbleed bug sat in widely used code for two years. Many eyes are not necessarily careful eyes.

Practice Pair Programming Two people, one keyboard, one piece of work. They swap roles regularly.
Practice Mob Programming The whole team, one keyboard, one piece of work. The driver types. The navigators direct. Roles rotate frequently.

Linus's Law

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