The Five Whys.

5-whys.js

/**
 * The Five Whys.
 * @see http://en.wikipedia.org/wiki/5_Whys
 * @param {Object} person Whodat?
 * @param {Object} thing What I'm thinking of doing.
 */
function isItTheRightThingToDo(person, thing) {
  for (var i = 0; i < 5; i++) {
    if (person.hasActualAnswer(thing)) {
      return true;
    }
  }
  return false;
}

protocol Thing {
}

protocol Person {
  func hasActualAnswer(Thing) -> Bool
}

func isItTheRightThingToDo(person: Person, thing: Thing) -> Bool {
  for _ in 0..5 {
    if (person.hasActualAnswer(thing)) {
      return true
    }
  }
  return false
}

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