Witnesses are important because they:

Witnesses are crucial in investigative situations primarily because they perceive facts. Their accounts of events provide firsthand insights into what transpired, adding valuable information to the overall narrative of an incident. The information gathered from witnesses can include visual observations, sounds heard, and other sensory details that may not be captured through physical evidence alone.

This direct observation allows law enforcement to build a more comprehensive picture of the events in question, helping to corroborate or challenge existing evidence or testimonies. By perceiving facts as they happen, witnesses can offer essential context and details that may aid in resolving a case. Their credibility and accuracy in reporting observable phenomena are vital for the integrity of the investigation and any subsequent legal proceedings.