Backfile

In competitive policy and Lincoln-Douglas debate, a backfile refers to a stockpile of previously prepared files—cases, disadvantages, counterplans, kritiks, topicality shells, theory blocks, and answers to common arguments—that a debater or team carries into rounds. Backfiles may be inherited from older teammates, traded between programs, purchased from camp file releases, or compiled over multiple seasons. They function as institutional memory: rather than rewriting standard arguments each year, debaters update existing files with new cards and adapt them to the current resolution.

Backfiles are especially important in formats with heavy evidence demands, such as NSDA Policy Debate and NDT/CEDA collegiate debate, where rounds can involve dozens of distinct arguments. A well-organized backfile lets a 2A or 2N pull pre-written extensions and "2AC blocks" quickly during prep time. Common backfile categories include:

• Generics: disadvantages and counterplans that apply across many affirmatives (e.g., politics DAs, states CP, consult CPs).
• Kritiks: capitalism, security, biopower, and other critical literature bases that recur season to season.
• Theory and topicality: pre-written shells and answer blocks on standard procedural objections.
• Case negs: argument sets targeting specific affirmatives on the current topic.

Summer institutes such as the Dartmouth Debate Institute, Michigan Classic, and the Stanford National Forensic Institute release lab files at the end of each session; these "camp files" form the backbone of many high school backfiles. The Open Evidence Project, hosted by the National Debate Coaches Association, publicly archives camp files each summer, partially democratizing access.

Critics argue backfiles entrench inequities between well-resourced programs and under-resourced ones, and that over-reliance on recycled blocks discourages original research. Defenders counter that backfiles lower the barrier to competitive participation by giving newer debaters working evidence to learn from and modify.