The Earth's A Sphere So Vast

The Earth's a sphere so vast That its curvature seems flat Maybe time is just like that : Once the future at some point Will have turned into the past What made the two disjoint ? Is time an arrow or a noose ? Is it a valid premonition That everything is repetition Or is it just the least ambitious Way of playing fast and loose With our definitions ? So which way do I bend ? We know from studying the gases That once a moment passes Something else must pass along Which can serve no useful end And which may never be undone Gone not in the usual sense Of leaking out of a container But in a sense much plainer : What was free has now been bound And has left our sphere of influence And is claimed by the background