---
title: Rule Title Here
impact: MEDIUM
impactDescription: quantified impact (e.g., "2-10x improvement", "200ms savings")
tags: prefix, technique, related-concept
---

## Rule Title Here

Brief explanation (1-3 sentences) of WHY this matters. Focus on performance implications and cascade effects.

**Incorrect (description of the problem/cost):**

```ruby
# Comment on problematic line explaining consequence
bad_example_code_here
```

**Correct (description of the benefit/solution):**

```ruby
good_example_code_here
```

Reference: [Reference Title](https://example.com)
