Jackson Pollock's art challenged the conventions of his time by introducing the technique of drip painting, which emphasized the act of painting as much as the final product. His approach was rooted in abstract expressionism, transforming the canvas into an arena for spontaneous, energetic expression. Pollock rejected traditional compositional techniques, opting for an unstructured, physically immersive process that allowed paint to flow freely. This method reinforced the idea that art could capture raw emotion and movement. Pollock's groundbreaking style pushed the boundaries of aesthetic norms, allowing greater freedom of expression and influencing numerous artists in the post-war era.