I interviewed for a company once where I got a real dataset from their business and just a vague assignment to analyze the data and find something that cou

I interviewed for a company once where I got a real dataset from their business and just a vague assignment to analyze the data and find something that could be optimized better. So I came up with a suggestion on how to improve factor A, but they told me later that what they were looking for was for the candidates to come up with suggestions on how to improve factor B. Why factor B was deemed more important than factor A wasn’t something that possibly could have been understood from the dataset alone.