Cadavers have quietly driven centuries of medical progress

Roach argues that the entire history of surgical advancement rests on a foundation most people never consider: dead bodies used to test procedures before they were ever performed on living patients. She traces the practice back to early anatomists dissecting cadavers, often obtained illegally, to map human anatomy accurately for the first time, and follows the thread forward to modern surgical training labs where surgeons still practice techniques on donated bodies before operating on living patients.

She visits training sessions where surgeons refine skills like organ transplant procedures or new surgical tools on cadavers, noting that this hands-on practice is something no textbook, simulation, or living volunteer could safely provide. Historically, this need created a persistent supply problem, driving practices like grave robbing and the black market body trade of earlier centuries.

Roach frames this unbroken chain from illicit dissection to sanctioned modern donation programs as evidence that squeamishness about cadavers has long been in tension with medicine's practical need for them.

Takeaway: nearly every surgical technique in use today was first practiced, however uncomfortable to consider, on someone already dead.