$3\mathrm{.}1$ Using an example of your choice, provide an example of a rule$-$based mistake in an industrial setting. Justify why this is a rule$-$based mistake.

$3\mathrm{.}2$ Using an example of your choice, provide an example of a violation in an industrial setting. Justify why this is a violation.

$3\mathrm{.}3$ Illustrate by means of an example, an operator$-$related error that could occur in an industrial setting.

$3\mathrm{.}4$ Provide an example of a human error and indicate how the error can be mitigated through accessibility when reconsidering maintainability. Justify your answer.