On the use of simulation in robotics: Opportunities, challenges, and suggestions for moving forward, HeeSun Choi, Cindy Crump, Christian Duriez, Asher Elmquist, Gregory Hager, David Han, Frank Hearl, Jessica Hodgins, Abhinandan Jain, Frederick Leve, Chen Li, Franziska Meier, Dan Negrut, Ludovic Righetti, Alberto Rodriguez, Jie Tan, Jeff Trinkle. Proceedings of the National Academy of Sciences(2021)