Principle: A law whose purpose is to protect wild animal populations should not be enforced against those whose actions do not threaten wild animal populations.
Application (should = opinion)
Snake charmers who violate the law against capturing wild snakes should not be prosecuted.
Principle
If a law's purpose is to protect wild animal law should populations → not be and person X's actions enforced do not threaten wild against animal populations person X
Evaluate / Goal
Whenever we're using a Principle to support a conclusion, we want the right side of the principle to match the conclusion.
We could have alternatively written this rule as, .
But since the idea we're trying to prove is , we want to be clear on what facts we need to know about the law and about snake charmers in order to know this principle applies to them.
We need to know that the law's purpose is to protect wild animal populations. Did they establish that?
Yes, they said there is a law against capturing wild snakes "which was enacted to protect wild snake populations".
Did they establish that snake charmers' actions "do not threaten wild animal populations"?
No, they didn't. That's what we're missing.
Goal
Let's look for, .