Chapter 931 - 867: Fish in the Pond
The dilapidated factory building.
No windows, no doors, no machines, no ceiling, no floor, dirty as a black plum lying across a small hill. There’s a road up the hill and a slope down the hill, with escape routes in all directions, making it truly seem like a fitting place for a drug lord’s meeting.
Jiang Yuan put on shoe covers, foot covers, and a head cover at the door, first peeked inside the factory, then circled around the building before returning to the main entrance. Without any hesitation, he activated the skill "Temporary +1" and assigned it to Crime Scene Investigation (Level 5).
This task was by no means simple; in fact, it could be described as the greatest challenge Jiang Yuan has faced in the area of crime scene investigation.
For he wasn’t looking for a specific person’s footprint or fingerprint; his task was to prove that someone’s footprint or fingerprint was not present.
In other words, proving an "absence."
Proving an "absence" is much harder than proving a "presence."
In some other fields, this could even be considered as creating problems out of nothing, to the extent that it would be reasonable to call the police.
But in the eyes of the police doing criminal investigations or forensic work, proving an "absence" is not as common as home-cooked meals, but it is a common occurrence.
For example, the basic requirement for evidence in criminal cases is to "exclude reasonable doubt," which is fundamentally a demand by criminal procedure law to prove the "absence" of "reasonable doubt."