More than 50 doctoral programs in the humanities and social sciences won’t be admitting new students in the fall of 2021 — a response to the pandemic and ensuing economic turmoil. It’s a sort of financial triage to help the programs devote funding to their current students, many of whom will be delayed in completing their degrees because of the disruptions. Suspending admissions for a year, some administrators say, will also allow them to reimagine their doctoral curricula to account for the flagging Ph.D. job market.