These words were the catch line for one of the early TV series, The Twilight Zone. Which despite the crude sets and special effects, engages us in alternate realities and provocative possibilities.
Gene Roddenberry welcomed us…. “You unlock this door with the key of imagination. Beyond another dimension; A dimension of Sound, A dimension of Sight, A dimension of Mind, You’re moving into a land of both shadow and substance, of things and ideas.”