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The three following principles were conceived purposefully to give structure and guidance as to how the first principle should be followed at all times and in all situations.
2. Do not correct the questionnaire.
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There are rare situations where Principle 2 must be violated in order to follow Principle 1 and document meaningful metadata. A real-world example of this is when a code value is accidently printed with the wrong value. There is no easy way to alias code values and CLOSER's documentation would suggest that there are two distinctly different codes, while the dataset would only refer to one of the codes. In this case, documenting the mistake would mislead the user and violate Principle 1.
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