Physicists and philosophers have long struggled to understand the nature of time: Here’s why

Time itself isn't difficult to grasp: we all understand it, despite our persistent struggle to describe it. The problem is one of articulation: a failure to precisely draw the right boundaries around the nature of time both conceptually and linguistically. (Donald Wu/Unsplash), CC BY

The nature of time has plagued thinkers for as long as we’ve tried to understand the world we live in. Intuitively, we know what time is, but try to explain it, and we end up tying our minds in knots.

St. Augustine of Hippo, a theologian whose writings influenced western philosophy, captured a paradoxical challenge in trying to articulate time more than 1,600 years ago: