Code Readability

The primary motivation behind camelCase is readability when spaces are disallowed in identifiers. Professional software engineering values clarity, maintainability, and shared comprehension above personal cleverness. Capitalization in camelCase functions like punctuation, guiding the reader's eye through what would otherwise be an undifferentiated string of characters. Without a convention like camelCase, multi-word identifiers become ambiguous and hard to read. Unreadable code slows reviews, increases onboarding difficulty, and raises maintenance costs. Clever but unreadable code creates friction for the whole team.