DB8 Speech & Debate Academy
Unit 2 · Lesson 3 6 min

Impact: Why It Matters

The impact answers 'so what?' — why the judge should care about the argument at all. You will be able to write an impact that gives the judge a reason to vote.

Naming the Stakes

An impact translates your claim and warrant into a consequence: lives saved, dollars gained, rights protected, harms prevented. Impacts should be framed in terms a judge intuitively values, such as human welfare, fairness, or economic stability, rather than abstract debate jargon.

Impact Calculus Preview

Not all impacts are equal — some affect more people (magnitude), some are more likely to happen (probability), and some happen sooner (timeframe). This unit introduces the concept; Unit 8 will teach you how to formally weigh impacts against the other team's.

Worked example

A debater has claim and warrant about a public health policy and needs to add impact.

Claim: 'Needle exchange programs reduce HIV transmission.' Warrant: 'Because they replace shared needles with sterile ones, cutting the primary vector for bloodborne transmission, as shown in a CDC study of 12 U.S. cities.' Impact: 'This directly prevents thousands of new HIV infections every year — a life-or-death outcome for some of the most vulnerable people in our communities.'

Quick Check
  1. 1. The impact of an argument primarily answers which question?

  2. 2. True or False?

    "Impacts should generally be framed using terms the judge already intuitively values, like safety or fairness."

Answer all 2 to check.

Takeaway

An impact turns proof into stakes — always finish the thought with 'and that matters because...'