From my Instructor - John Pyrik

"Investigators not only collect information, they analyze it. This may seem like a trite observation, but we sometimes forget about this aspect of our jobs because analysis becomes such an automatic part of the work that we do it unconsciously.

Leaving aside (for the time being) the type of analysis done by investigators when they try to fill in the missing pieces of a puzzle, lets focus on analysis as it relates to assessing the reliability of information.

In other words, how do we determine truth from fiction?

This is a daily issue for any investigator dealing with complainants, suspects, and informants. Over time, an experienced investigator develops a heavy-duty "BS detector". Mine, for example, was first developed in the murky world of intelligence and further refined by years dealing with smooth-talking con artists in the securities industry.

The problem most investigators have though is that their "BS detectors" work best when they are interviewing someone, not necessarily when they are reading something. In short, it is usually easier for an experienced investigator to tell someone is lying in person than in print."

For me, I learned the "BS detectors" from my follow classmates in BCIT over the years. =D