Engineer 1:  Can you explain what that section of code is supposed to accomplish?

Engineer 2:  No.  We don’t have any documentation and no one knows.

Engineer 1:   Okay, well, I dug into it and, while it’s not clear to me what it was intended to accomplish, I investigated and established that all it does is slow down the data collection rate and add noise to the data collected.  I recommend we remove it.

Engineer 2:  Mmm…  I don’t think that’s a good idea.  The code is stable as is.  We don’t want to risk breaking it.