Are orbs always precursory evidence of paranormal manifestation?
No, often they are the reflection of particulate matter on a camera lens or in the surrounding air. True orbs are ball-shaped, emit their own light and leave an energy trail (indicative of motion). It is important to realize that context is everything. If an “orb” is captured visually in an environment nearly devoid of “free-floating” dust matter or reflective surfaces and the above characteristics of said “orb” are met, then further study should be pursued.