Agreed, yes/no questions can often be leading and may come to totally inaccurate conclusions. With open-ended questions you may get a rich answer with a lot of

Agreed, yes/no questions can often be leading and may come to totally inaccurate conclusions. With open-ended questions you may get a rich answer with a lot of bias, but at least the answer is rich and you can sift through the data gathered. Its just not nearly as efficient as a "rate on a scale of 1-10" or "yes or no" questionnaire. But the devil is always in the details.