A cultural artifact is a human-made object which gives information about the culture of its creator and users. The artifact may change over time in what it represents, how it appears and how and why it is used as the culture changes over time. This can also be seen in biofacts. A biofact represents biotechnological changes in a living entity, according to cultural visions. Representation is a topic in visual arts, music and literature, it concerns the depiction and ethical and political concerns of image construction and narrativity. Abstract art is sometimes called non-representational art and absolute music is called non-representational music.