Massively Multiplexed Spectroscopy with the Prime Focus Spectrograph in the Era of JWST and Roman

The results emerging from JWST are changing our understanding of galaxy evolution in profound and exciting ways, but still over very limited sky area. With the advent of the Roman Space Telescope, we will have the field-of-view needed to add environment. An important component of surveying large sky areas into the 2020s will remain massively multiplexed spectroscopy from the ground, which would provide critical calibrations for the Roman Grism data, as well as bluer coverage for Roman galaxies. I will describe the Prime Focus Spectrograph Galaxy Evolution Survey, scheduled to begin in 2024, and ways in which it would complement and enhance the High Latitude Survey, as well as provide a feeder to JWST for exciting detailed follow-up.