Inability to reliably determine egg doneness without precise timing or trial-and-error

Home cooks frequently overcook or undercook boiled eggs because they lack reliable visual or tactile methods to check doneness without breaking the shell or relying on exact timing. Current solutions (timers, ice baths, visual cues) are inconsistent across different egg sizes, altitudes, and starting temperatures, forcing users to repeatedly experiment or waste eggs. This creates frustration during meal prep and entertaining when consistency matters.