"Swimming in spacetime" is a reference to the following paper by Jack Wisdom: http://groups.csail.mit.edu/mac/users/wisdom/swimming.pdf http://groups.csail.mit

"Swimming in spacetime" is a reference to the following paper by Jack Wisdom: http://groups.csail.mit.edu/mac/users/wisdom/swimming.pdf http://groups.csail.mit.edu/mac/users/wisdom/swimming.pdf The paper is quite accessible but here is a short summary: https://www.science.org/content/article/swimming-through-spacetime https://www.science.org/content/article/swimming-through-spa...