Procrastination
Procrastination demonstrates extraordinary versatility, capable of preventing virtually any human activity regardless of domain. It applies equally to academic work, household chores, medical appointments, creative endeavours, exercise routines, and important conversations. The Behavioural Flexibility Institute has documented over 4,000 distinct activities that humans regularly procrastinate upon.
Moreover, procrastination adapts flawlessly to technological advancement. It once manifested as staring out windows; now it manifests as scrolling through social media. Its form evolves whilst its function remains constant—a remarkable example of conceptual adaptation.
Boat
Boats offer considerable but domain-limited versatility. They transport goods and people, enable fishing, facilitate recreation, support military operations, and provide floating accommodation. The International Vessel Classification Society recognises over 200 distinct boat categories, from dinghies to container ships.
However, boats remain fundamentally constrained to water-based applications. A boat cannot assist with land-based transport, aerial travel, or indeed any activity occurring more than a few metres from a suitable body of water. This geographical dependency represents a significant limitation when compared to phenomena unconstrained by physical medium.