The document discusses augmented reality, defining it as relating virtual environments to real environments to improve people's interaction with the real world by providing information not directly perceptible to the senses. It notes that for augmented reality to work properly, the real camera perspective must be precisely mapped to the virtual environment. The document explores using augmented reality to provide "contents" to museums by giving voice to cultural heritage exhibits through interactive links and references that highlight context and relationships. However, it notes that technology can be fragile and aims to inspire wonder over providing strict information.