Why exactly do negatives entities inevitably need to switch polarities?

[Black Dragon]

Some of what you'd consider demons are 4d SMC's, 5d beings, etc. Many are not even that, but lower astral thought form entities. Tulpa, Djinn, etc. So yes, in other words very much like AI programs. These lower entities try to mimic other forms to elicit certain responses. They can appear as an angel, a reptilian, and ET, ghost of a person, etc.