This framework comes from a debate seminar by Ashish Kumar. I've used it in my own prep ever since.
The most common source of prep anxiety is uncertainty about whether you have enough arguments. The answer, almost always, is that you're asking the wrong question. The question isn't "do I have enough?" It's "which of these actually wins the round?"
Two types of cases
Type 1 cases have a single dominant argument capable of winning the round on its own. Your job is to defend every link in that argument. If the impact is strong enough, you don't need backup — you need depth.
Type 2 cases have multiple viable winning arguments, and you have to decide which ones to develop. Trying to develop all of them equally means developing none of them well.
Most cases are somewhere in between. That's the point of the framework — it forces you to actually think about which arguments are round-winning versus which are merely reasonable.
Strategy for Type 1
Focus on arguments that work regardless of context. If your argument relies on a specific scenario being true, it's vulnerable. Build from principles that withstand contextual challenges. Apply common sense reasoning rather than overthinking the edge cases.
Strategy for Type 2
Three options:
Worst-case argumentation. Win by succeeding even under the most unfavorable circumstances for your position. If you can win the worst-case scenario, you win.
Divide and conquer. Develop 2–3 complete arguments that cover different scenarios. This way, if one scenario doesn't apply, another does.
Context prioritization. Establish one metric that makes your context the most important. Then dismiss the others as irrelevant by that metric.
The key insight
Enumerating doesn't make a case stronger. One point can win a debate in many rounds. Effective prioritization matters more than breadth. Figure out which argument is doing the most work, and make sure it's airtight.