In my opinion, ufo is a physical object or observed. I can not pinpoint exactly what it is. Both by observation and investigation. Many UFO Although identified as flying objects can not be uniquely identified. When I first noticed Once validated, or But when I checked again with a better way. Or with the technological advances Back identified as The flying objects can be uniquely identified There may be a natural phenomenon And in some cases may be something manmade. Either inadvertently or intentionally misleading false misleading. A physical object or observed. I can not pinpoint exactly what it is. Both by observation and investigation.