Postmodernism rejects universal theories and meta-narratives in favor of local and contextual explanations. It is skeptical of ideas of progress, scientific truth, and cultural unity. Postmodernism sees identity as fragmented and emphasizes subcultures, image, and surface appearance over depth and originality. Postmodern art mixes styles, rejects notions of artistic purity, and blurs distinctions between high and popular culture. Postmodern thinkers deconstruct power structures and essentialist ideas of gender, sexuality, and race.