The thing is that for most code, the meaning is outside the code itself. The code is just a description of a computable solution. But both the problem and found

The thing is that for most code, the meaning is outside the code itself. The code is just a description of a computable solution. But both the problem and foundational solution is out there, not in the code. And some code are solving additional complexities not essential ones (like making it POSIX instead of using bashisms). In this case, it’s just familiarity with the tools that can help you to derive alternatives approaches.