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  Interpretations (a) to (e) attempt to provide guidance to engineers on how to make objective and truthful public statements. Interpretation (a) suggests that engineers should strive to prevent misunderstandings of engineering achievements, but does Canon 7 require engineers to respond to statements by others that give an incorrect account of engineering achievement? For example, suppose your local newspaper reports a self-proclaimed inventor has created a perpetual motion machine and is holding a demonstration to prove his invention. Do you feel an obligation to attend the demonstration and challenge his claim?

This scenario has less to do with professional ethics than personal ethics and value. Professionally, you are not obligated to prevent or correct misunderstandings about engineering other than to be objective and truthful in your own public statements and with your affiliates. The decision whether to attend the demonstration and voice your objection to the claim is a matter of personal choice.

Interpretation (b) requires engineers to include all pertinent information in professional reports, statements, and testimony, but should a report omit data that is inconclusive (either because of experimental errors or because the phenomenon is not well understood)? Perhaps the motivation behind the omission is the determining factor. If the purpose is to deceive the audience, then clearly the omission is unethical. Consider the case, "Falsified Data," published in Chemical Engineering (May 5, 1980, pp. 100-107) by Roy V. Hughson and Philip M. Kohn. In this case, a young chemical engineer collected inconclusive data on two catalysts, but his division head asked him to write a report favoring one catalyst and to "make the numbers look good" by doing the math backwards. What would you do?

If you "cook" data, then you violate Canon 7.

Interpretation (c) requires that engineers who make statements in legal proceedings, offering expert witness testimony, for example, must base their statements on adequate knowledge of the facts, their competence in the subject matter, and their belief in the accuracy and propriety of their testimony.

Interpretation (d) requires engineers to provide all background information when they render an engineering opinion so the general public or client can be sure it is unbiased. Interpretation (e) dovetails with Interpretation (d) of Canon 5, which requires engineers to recognize the contributions of co-workers to their work. While guidelines exist for recognizing collaborator contributions, and for using others' unpublished works, it is less clear how to recognize others' contributions and data in a less formal setting such as a job interview. On one hand we want to prove to a prospective employer that we are capable and multi-dimensional, but on the other hand, professional ethics require that we do not promote our self-interest at the expense of our collaborators. The situation described earlier in Jack Fry's Interview asks us to consider how to adequately acknowledge the contributions of others in a multidisciplinary group.