The Mystery

A lucid dream is a type of dream where the dreamer becomes aware that they are dreaming. During a lucid dream, the dreamer may gain some amount of control over the dream characters, narrative, and environment; however, this is not actually necessary for a dream to be described as lucid. Lucid dreaming has been studied and reported for many years. Prominent figures from ancient to modern times have been fascinated by lucid dreams and have sought ways to better understand their causes and purpose. https://www.youtube.com/embed/WeegX5cXBN4

Sleep is a physiological behavior that is common in all animal species. It forms around one third of a human life. It is not known clearly the exact functions of sleep but it seems to be essential for survival as prolonged sleep deprivation leads to severe physical impairment followed by cognitive loss and eventually death. It’s not really understood what the purpose and content of dreams are, but they have certainly been the subject of religious and philosophical interest and a topic of scientific speculation throughout recorded history. Interestingly, the scientific study of dreams is known as Oneirology. Lucid dreaming is discussed in centuries-old Tibetan Buddhist texts. A simple definition that comes out of our present scientific studies is that lucid dreaming is 'awareness of dreaming while in the dream state'. An out-of-body experience is a phenomenon in which a person perceives the world from a location outside their physical body. https://www.youtube.com/embed/Z1hbeQEy

Consciousness, at its simplest, is 'sentience or awareness of internal or external existence'. Despite millennia of analyses, definitions, explanations and debates by philosophers and scientists, consciousness remains puzzling and controversial, being 'at once the most familiar and most mysterious aspect of our lives'. Perhaps the only widely agreed notion about the topic is the intuition that it exists. Opinions differ about what exactly needs to be studied and explained as consciousness. Sometimes, it is synonymous with the mind, and at other times, an aspect of it. In the past, it was one's 'inner life', the world of introspection, of private thought, imagination and volition. Today, it often includes some kind of experience, cognition, feeling or perception. It may be awareness, awareness of awareness, or self-awareness. There might be different levels or orders of consciousness, or different kinds of consciousness, or just one kind with different featur

Invisibility is the state of an object that cannot be seen. An object in this state is said to be invisible (literally, 'not visible'). The term is often used in fantasy/science fiction, where objects cannot be seen by magical or technological means; however, its effects can also be demonstrated in the real world, particularly in physics and perceptual psychology classes. Since objects can be seen by light in the visible spectrum from a source reflecting off their surfaces and hitting the viewer's eye, the most natural form of invisibility (whether real or fictional) is an object that neither reflects nor absorbs light (that is, it allows light to pass through it). This is known as transparency, and is seen in many naturally occurring materials (although no naturally occurring material is 100% transparent). Invisibility perception depends on several optical and visual factors. For example, invisibility depends on the eyes of the observer and/or the instruments used. Thus an