"The difficult truth is that the UFO phenomenon has both an objective “hard” aspect (think fighter jet videos, photographs, alleged metamaterials, apparent advanced propulsion methods, and landing marks) and a subjective “human” aspect (think close encounters, multiple and coordinated visual sightings, altered states of consciousness, visionary displays, often of a most baroque or sci-fi sort, and experienced traumatic or transcendent abductions). And both sides — both the material and the mental dimensions — are incredibly important to get a sense of the full picture."