Rock Climbing Grading System Explainer

Create an explainer about rock climbing grading systems.

Content Purpose:
- Target Audience: {{audience}}
- Content Format: {{format}}
- Primary Grading System Focus: {{primary_system}}
- Secondary Systems to Cover: {{secondary_systems}}
- Use Case: {{use_case}}

Please create a comprehensive explainer including:

1. Introduction to Grading
- Why grades exist
- What grades measure
- Limitations of grades
- How to use grades wisely

2. Primary System Deep Dive
For {{primary_system}}:
- History and origin
- Scale breakdown
- Sub-grades explained
- Typical characteristics per grade
- Progression milestones

3. Secondary Systems Overview
For each additional system:
- Basic explanation
- Scale range
- Key differences
- Where it's used

4. Conversion Reference
- Grade comparison chart
- Conversion caveats
- Regional variations
- Style-specific notes

5. Grade Modifiers
- Soft vs. hard grades
- Sandbagging explained
- Gym vs. outdoor grades
- Regional tendencies

6. Style-Specific Grading
- Sport climbing grades
- Trad climbing grades
- Bouldering grades
- Aid climbing grades
- Ice climbing grades

7. How Grades Are Set
- First ascent grading
- Consensus process
- Grade changes over time
- Controversy handling

8. Using Grades Effectively
- For trip planning
- For training goals
- For skill assessment
- For route selection

9. Common Misconceptions
- Myths debunked
- Important nuances
- Cross-style comparisons

10. Quick Reference Card
- Grade ranges summary
- Key milestones
- System comparison