Ghost Research findings found that those living energy forces possess intelligence which differentiates them from those of insects and bugs.
Ghost Research
Physical Body: Its Seasoning Effect in Spirit Existence
This article describe the seasoning effect of physical body in spirit existence that limits their freedom of movement in Spirit Dimension.
Paranormal Videography: Interpreting the “Realness” of Ghost Appearance
To understand ghost existence through their appearance is similar to how we understand the living behavioural patterns.