 The incomplete nature of the fossil record, varying interpretations of what material exists, and the inability to observe behavior ensures that the illustration of dinosaurs has a speculative component.Therefore, a variety of factors other than science can influence paleontological illustrators, including the expectations of editors, curators, and commissioners, as well as long-standing assumptions about the nature of dinosaurs that may be repeated through generations of paleoart, regardless of accuracy.While the word "paleoart" is relatively recent, the practice of restoring ancient life based on real fossil remains can be considered to have originated around the same time as paleontology.