“…The question of geometric stability has already been studied extensively for spacelike slices of spacetimes by Allen [2][3][4], Bray and Finster [17], Bryden, Khuri, and Sormani [18], Cabrera Pacheco [25], Finster [35], Finster and Kath [36], Huang and Lee [48], Huang, Lee, and Sormani [49], Jauregui and Lee [50], Lee [54], Lee and Sormani [55], LeFloch and Sormani [58], Sakovich and Sormani [70], Sormani and Stavrov Allen [76]. In the setting of spacelike slices Lee and Sormani [55] conjecture that Sormani-Wenger intrinsic flat (SWIF) convergence is the correct notion of convergence for stability.…”