Create RED/GREEN Examples

RED and GREEN here are contrastive examples, not test-driven-development states. RED always means an implementation to avoid for the stated condition. GREEN always means the smallest implementation that satisfies that condition.

State the deciding condition literally before the pair. Keep the same domain, language, inputs, surrounding context, and goal in both examples. Change only what establishes the decision. DO NOT compare an unrelated toy RED with a framework-heavy GREEN, or use tone to imply the rule.

For each pair, provide this structure: