Time’s elasticity has perplexed philosophers for millennia. It has inspired writers for centuries. More recently, it has captured the attention of psychologists like Ogden, who have crafted experiments to understand the conditions of time perception: whether people feel time differently when they’re hot or cold, stressed or at ease, watching the clock or focused on something else. Time can disappear when we are deeply immersed in an activity we enjoy—the baking of sourdough bread, or the total absorption in an art project. Other studies suggest that fear and anxiety shape our sense of time just as powerfully. – Wired