Time is something intangible and surrounds us every day. Sometimes it disappears very quickly, sometimes it is heavy and sluggish and hardly moves. Everything is attached to it. Time can be different in different places. It is almost as if a secret surrounds it, one that has not yet been revealed.
At some point, time runs out like in an hourglass. The sand falls grain by grain onto the hard interior of the clock and gathers there to form a mountain. How long do we have until the last grain lands on the mountain?