When solving a case study with a candidate during a job interview, I mostly focus on learning his or her approach to tackling business problems. Does he or she use logical thinking and causal reasoning, or do they use standard frameworks learned in school?
I talked with many candidates who, having graduated from the best business schools around the world, were very efficient at applying schematic solutions. Yet when asked a question going beyond this, they were unable to provide an answer. Porter's Five Forces Analysis was a dead end for them as they blindly relied on the schemes instead of trusting their own minds.
On the other hand, I met people who knew nothing about balance sheets or profit and loss accounts, not to mention such concepts as the Porter's Five Forces. However, when asked about competition dynamics in a chosen industry, they could logically structure the problem, looked for interrelations, and were able to indicate the reason why our client’s market share was decreasing.
At BCG, where we constantly deal with the most critical problems of our clients, logic and unique ideas pave the path to success.