“As gut-wrenching as these stories are going to be, we are going to find ways to innovate and adapt, to make meaning out of these separations,” said Gary Laderman, a professor of American religious history at Emory University.

When disasters limit mourning, people invent new ways to say goodbye, Dr. Laderman and his peers said. It had happened many times before. The Black Death in Europe caused a high mortality rate among priests, so everyday people stepped in. During the Civil War, American families turned to embalming, to preserve the dead over time and distance, so they could be returned for burial at home. Those efforts helped give rise to the modern funeral industry. The Khmer Rouge in Cambodia left many of their victims in mass graves. So the bereaved switched to chanting over the possessions of the departed.

Those shifts were poised to happen before the tragedies hit, the historians said. But the crises accelerated the changes, and they lasted because they filled some shared need. Based on what the historians said, Theresa, your “Art of Dying” class may be more relevant than ever.

“In coming months, we’re going to see what else the word funeral can mean,” said Amy Cunningham, a funeral director in Brooklyn and a teacher of that course.

Authority figures like funeral directors and clergy members may become less central to the grieving process. “I think we’ll see a radical shift in the democratization of authority, who has the right to officiate a funeral,” said Priya Parker, the host of a new podcast, called “Together Apart,” on how people can still connect during this crisis.

Online funerals may dissolve the constraints of the form: size, location, cost. Eulogies could take on new shape. “We might imagine recorded remarks from loved ones, keeping their social distancing practices, filming words of remembrance at varied sites of significance to the deceased: a back porch rocking chair, a local fishing pond, a beloved hiking trail, the site of a first date,” wrote the Rev. Cody J. Sanders, an American Baptist chaplain at Harvard University.