Investigator Not simply an observer, though, you may also fiddle with things here a bit to see what happens. Push on this part of the "web," what does that do to the other parts of the web?
Investigators differ from Observers primarily in how they observe. An observer looks without touching (too much), while an investigator will want to figure out the entire why of a thing, or a behavior. As even some Humans have noticed, sometimes investigating the why of a thing ends up changing that thing, and your new won knowledge is made obsolete in the process. The Investigator does not always notice this, nor often care even if he does.
As Saruman said to Gandalf," the white cloth can be died, the white light can be broken." To which Gandalf replies, "In which case it is no longer white." Saruman answers this by imprisoning Gandalf. He did not care for the "naive" wisdom of Gandalf's words.
The investigator is likely to want to take over cities in order to prevent other aliens from "contaminating" the scene, from wrecking the data or disturbing the situation before he can come to understand it fully on its own. Investigator factions will often work together, sharing information and erecting (effective) walls around certain Human installations or institutions (social or business).
