Pizza
The pizza demonstrates extraordinary evolutionary flexibility, adapting to every dietary restriction and cultural preference humanity has devised. Gluten-free crusts serve coeliac sufferers; vegan cheese satisfies plant-based consumers; cauliflower bases appeal to the carbohydrate-averse. Regional adaptations include Japan's mayonnaise and corn variants, India's paneer tikka interpretations, and Brazil's controversial chocolate-banana dessert versions. The pizza's modular architecture—base, sauce, toppings—permits infinite customisation whilst maintaining categorical identity. It has survived and thrived through every dietary trend from Atkins to keto.
Gandalf
Gandalf has demonstrated remarkable adaptability across media formats. From page to radio drama to animated film to live action, the wizard has been successfully translated whilst maintaining core characteristics. The character has inspired countless parodies, homages, and references in popular culture. However, Gandalf cannot physically change to accommodate audience preferences—his personality and appearance are canonically fixed. Any significant alteration would constitute a different character entirely, a limitation pizza does not share.