Jorge Luis Borges wrote, ​“Time is the sub­stance from which I am made. Time is a riv­er which car­ries me along, but I am the riv­er; it is a tiger that devours me, but I am the tiger; it is a fire that con­sumes me, but I am the fire.” And it’s still as close a def­i­n­i­tion as we have. This hour of Radi­o­lab, we try our hand at unlock­ing the mys­ter­ies of time. We stretch and bend it, wres­tle with its sub­jec­tive nature, and wrap our minds around strate­gies to stan­dard­ize it…stopping along the way at a 19^th-cen­tu­ry rail­road sta­tion in Ohio, a track meet, and a Beethoven concert.