The most serious objection to regarding the Demoiselles as the origin of Cubism, with its evident influence of primitive art, is that "such deductions are unhistorical", wrote the art historian Daniel Robbins. This familiar explanation "fails to give adequate consideration to the complexities of a flourishing art that existed just before and during the period when Picasso's new painting developed." Between 1905 and 1908, a conscious search for a new style caused rapid changes in art across France, Germany, Holland, Italy, and Russia. The Impressionists had used a double point of view, and both Les Nabis and the Symbolists (who also admired Cézanne) flattened the picture plane, reducing their subjects to simple geometric forms. Neo-Impressionist structure and subject matter, most notably to be seen in the works of Georges Seurat (e.g., Parade de Cirque, Le Chahut and Le Cirque), was another important influence. There were also parallels in the development of literature and social thought.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Which technique did the Impressionists use to not make their subjects simple forms?
unanswerable