Solution

The correct answer is Data flow

Key Points

• Cope with complexity: One of the goals of reverse engineering is to simplify and understand complex systems by breaking them down into more manageable parts.
• Recover lost information: Reverse engineering aims to retrieve and understand lost or undocumented information about a system or component.
• Detect side effect: Reverse engineering can help in understanding unintended consequences or side effects within a system, which can be crucial for improving and maintaining the system.
• Data flow: While understanding data flow can be a part of reverse engineering to understand how data moves through a system, "data flow" itself is not a primary goal of reverse engineering. The primary goals are more about understanding the overall structure, behavior, and functionality of the system.

Therefore, "data flow" is not listed as a primary goal of reverse engineering.