It is not unethical for engineers to offer conflicting opinions on the application of engineering principles, or to criticize the work of another engineer, at hearings on an engineering project, in the interest of the public, provided such criticism is offered on a high level of professional deportment.

Some aspects of an engineering problem will admit of only one conclusion, such as a mathematical equation, but it is a fallacy to carry this statement to the ultimate conclusion that all engineering problems admit of only one correct answer. Particularly in large and complicated engineering problems, such as a water-power complex, there may be many approaches, all based on sound engineering principles. Large public projects are notably in this category, and the approach finally adopted may properly reflect not only engineering diagnoses, but also determinations of public policy. Engineering judgment from exclusively an efficiency and cost standpoint may conclude that a proposed highway should be built through the heart of a heavily populated residential district. Public policy may dictate, however, that the highway should be built at greater cost and less efficiency through a lightly populated area. An engineer who presents either point of view cannot be said to be "incorrect." There may also be honest differences of opinion among equally qualified engineers on the interpretation of the known physical facts. Assuming complete factual agreement on such factors as water flow, soil conditions, rate of evaporation, past rainfall, runoff, etc., engineers can and do arrive at different conclusions based on their best understanding of the application of those facts. Also, it should be recognized that in the type of case at hand the engineers must base their opinion on estimates of indeterminate factors, e.g., construction cost by one method or another, population growth, economic development of the area and possible future trends in more efficient equipment. Canons 5 and 7 refer to expression of "opinion," confirming the idea that the engineer is called upon for the expression of his judgment, not the mere recital of known engineering data. Rule 10 refers to the engineer being an "advocate" of a position, again recognizing that contrary conclusions are to be expected. The ...

A state legislature has pending various bills involving water supply, flood control and production of electric power. The most efficient and economical method to achieve the desired result has been debated within the legislature and among the citizenry generally for several years. Hearings are called by a committee of the state legislature to receive comments and recommendations on the various proposals which have been offered. A professional engineer representing the state power commission testifies that engineering studies by him and his professional colleagues indicate the most efficient solution from an engineering standpoint is a series of low dams. Another professional engineer, representing a private power company, testifies that his engineering analysis indicates a more effective and less expensive solution, producing the same results, by using one high dam. Each engineering witness submits voluminous engineering data in support of his position, and freely criticizes the analysis and findings of the other.

Is there a violation of the Canons of Ethics by one or both engineers' in offering conflicting opinions or in criticizing the work of the other at a hearing on an engineering project in the interest of the public?