What do art critics need to back up there judements about art?

Art critics need a combination of knowledge, experience, and a framework for analysis to back up their judgments. This includes an understanding of art history, theory, and techniques, as well as context regarding the artist's intentions and the cultural environment. Critics often rely on specific criteria like composition, use of color, and emotional impact, and they should support their opinions with clear reasoning and examples from the artwork itself. Ultimately, their judgments should balance subjective interpretation with informed critique to provide a comprehensive perspective.