You can see that the climbing rubber on the sole of these shoes has worn away and the climber has been climbing on the rands. If I was to just repair the sole of these the rand would wear out before the new sole, making them unusable.
If you are unsure, look at the toes of your shoes - if you can see any holes, cracks or tears then you will need a rand repair. You can also feel around the edge of the sole to see how soft, and therefore how thin, the rubber is. This should be nice and even firmness all the way around and if there are any soft spots on the toe then you will need a rand cap repair.