Why does Roy Lichtenstein use dots?

Lichtenstein had some trouble making brush strokes, but he used his dots to reproduce some of his greatest brushy predecessors. He was inspired by Monet’s Rouen Cathedral series of the late 1890s, and in 1969, turned his pale, dotty cathedrals into glowing shimmers.

How do you paint like Lichtenstein?

Quote from video: People don't take roy lichtenstein sirius. Is een artiest. Met u nu is artistry. And answer richard is wat doe meten is versions.