This fits my theory of programming, and theory of bugs - We take a problem, create a plan, and then write code that implements that plan. Defects can come from

This fits my theory of programming, and theory of bugs - We take a problem, create a plan, and then write code that implements that plan. Defects can come from: * having/being given the wrong problem * right problem, but plan does not actually solve it * right plan, but your code did not correctly implement it