What are the rules for crime scene investigators and what do they mean?

Question

What will be an ideal response?

Answer 1

Without control, a life might be lost, evidence destroyed, assignments overlooked, or the investigation conducted in a generally slovenly manner.
In processing the crime scene, it is necessary to keep both known facts and inferences in mind. This facilitates the reconstruction of the offense and identification of the perpetrator's method of operation, suggests the possible existence of certain types of physical evidence, and assists in establishing appropriate lines of inquiry.
In approaching the point of focus, minute but extremely important evidence may be altered or destroyed, the area to be searched may be too rapidly defined, and other areas that might be fruitfully explored are overlooked or given only a cursory examination.
The rule of inclusiveness dictates that every available piece of evidence be obtained and, where there is a question as to whether a particular item constitutes evidence, be defined as such.
Documentation of the crime scene is a constant activity, starting with the rough, shorthand record created by field notes. In lesser offenses, a single officer may be the only representative of the police department at the scene. Thus, everything that is learned will be a result of his or her investigation. In such cases, the only documentation that may exist is the officer's field notes and the incident/offense report.