Exactly. I've been working on a codebase where we're trying to make a rush-job project into something mature and reusable. One of the developers on my team wa

Exactly. I've been working on a codebase where we're trying to make a rush-job project into something mature and reusable. One of the developers on my team was concerned about our obviously and grossly inefficient business-logic layer that applied business rules to a given record. I told him not to worry about it - lo and behold, we ran a profiler and the business layer was barely a blip on our performance problems, and our dynamic GUI stuff represented the lion's share of wasted time.