Imagine that you graduate as an engineer a few years from now, and have taken your first job as a civil engineer for a great company in Ann Arbor. You are part of a team doing structural design for the world’s tallest building, to be built in Shanghai. Your boss comes into your office and says. “Evan, I want you to use equation number 16 from Chapter 6 your CEE 312 textbook to calculate the size and spacing of the main columns in the building core.”
Seem unlikely? It is. If it was really as simple as pulling formulas out of a book, nobody would be that interested in paying you to do it.
Frequently you have to create your own approach to problem solving, on the fly. Of course, many problems can be solved by application of known solutions. But even in such cases it’s seldom that the solution approach is obvious. You have to look at an ambiguous situation (design the columns to hold up the building); consider alternate designs to address it and recognize some key criteria for assessing those designs (will the columns buckle? will they bend too much from the wind load?); reach for tools that can quantify those criteria (Euler’s formula? finite element analysis?); assess their appropriateness and uncertainty (is an expression for critical buckling load reliable in my situation? did the finite element analysis converge?); and then reach a conclusion about how that analysis informs the problem at hand. Even when the solution can be found using known ideas, nobody knows what chapter, or chapters, the solution is hiding in, because real problems come without a chapter number.
Solving real problems requires judgment. It requires making decisions. And it requires living with the uncertainty that perhaps you don’t have the best answer.
A good university curriculum will challenge you to develop such judgment and make such decisions. In your classes you should look for and embrace problems that do not have a clear answer, but in which multiple approaches are possible and the result has to be justified and defended. As a rule, new university students do not enjoy this ambiguity. We give you ambiguous problems that we did not teach you how to solve, and still your grade depends on the result! But one role of the university curriculum is to teach you, through experience, how to critically assess problems and build solutions that were previously unknown.
Committing to a decision is hard, and not all judgments are good. Even so, you should embrace the opportunity when we give you problems that you do now know how to solve, because learning to solve the (apparently) unsolvable is the essence of creative engineering.