  We show that constraints on scalar field potentials and towers of light
massive states in asymptotic limits of scalar field space (as posited by the de
Sitter Conjecture and the Swampland Distance Conjecture, respectively) are
correlated with the prospects for defining asymptotic observables in expanding
FRW cosmologies. The observations of a "census taker" in an eternally inflating
cosmology are further related to the question of whether certain domain walls
satisfy a version of the Weak Gravity Conjecture. This suggests that answers to
fundamental questions about asymptotic observables in cosmology could help shed
light on the Swampland program, and vice versa.
