I love me a nice loop. Hence in part my keenness on this movie.
Something quite nice about the robot's tone of voice here correcting Cooper, and the fact that a robot is correcting a human.
TARS: They constructed this three-dimensional space inside their five-dimensional reality to allow you to understand it.
Cooper: Well it ain't working.
TARS: Yes it is...
TARS has some nice lines, delivered very well by Bill Irwin.