More and more computer programs that provide solutions to mathematical problems in engineering are being produced, and it is thus increasingly unnecessary for practicing engineers to have a thorough understanding of fundamental mathematical principles. Consequently, in training engineers who will work in industry, less emphasis should be placed on mathematical principles, so that space in the engineering curriculum will be available for other important subjects. Which one of the following, if true, most seriously weakens the argument given for the recommendation above? ['The engineering curriculum already requires that engineering students be familiar with and able to use a variety of computer programs.', 'Development of composites and other such new materials has meant that the curriculum for engineers who will work in industry must allow time for teaching the properties of these materials.', 'Most of the computer programs that provide solutions to mathematical problems in engineering can be run on the types of computers available to most engineering firms.', 'The effective use of computer programs that provide solutions to mathematical problems in engineering requires an understanding of mathematical principles.']