Antipattern: God Helper Module

The smell

• ApplicationHelper with dozens of unrelated methods
• Helpers that perform queries (fetch_recent_posts, current_admin_count)
• Business calculations in helpers (calculate_tax(order))
• Predicates about the current user as global helpers
• Method names colliding or shadowing model methods

Why it hurts

• Pollutes the global view namespace
• Mixes formatting (legitimate helper work) with queries and domain logic
• Hard to tell which view uses which helper — refactoring is risky
• New devs add to it because there's no obvious better home