Timothy's library had grown beyond simple books. He now cataloged audiobooks, ebooks, and rare manuscripts—each with unique attributes. Audiobooks had narrators and durations. Ebooks had file formats and download links. Manuscripts had preservation conditions and historical significance.
His first attempt created separate classes with duplicated code:
Margaret found him writing the same initialization code for the third time. "You're repeating yourself," she observed. "Come to the Inheritance Gallery—where specialized blueprints inherit from general ones."
The Parent-Child Relationship
Margaret showed Timothy inheritance:
"The Audiobook class inherits from Book," Margaret explained. "It gets all of Book's attributes and methods automatically. We only add what's unique to audiobooks."
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