In December 2014, YouTube acknowledged a significant software limitation when the music video 'Gangnam Style' surpassed 2.1 billion views, hitting the ceiling of its 32-bit integer counter. This unexpected milestone prompted YouTube to upgrade its view counter to a 64-bit integer, which dramatically increased the maximum view count to approximately 9.2 quintillion. The decision to use a 32-bit counter initially was based on the assumption that no video would ever reach such astronomical numbers. However, 'Gangnam Style' became a global phenomenon, breaking records and accumulating views at an unprecedented rate. YouTube engineers had foreseen the issue and prepared for the transition, leading to a seamless upgrade without major disruptions. This incident serves as a reminder of the assumptions embedded in technology design and how unexpected user behavior can challenge those assumptions.