" One of the benefits of the jump drive is its irreconcilability: jumping is predictable. When known levels of energy are expended, and when certain other parameters are known with precision, jumping is accurate to less than one part per ten billion. Over a jump distance of one parsec, the arrival point of a ship can be predicted to within perhaps 3,000 kilometres (on larger jumps, the potential error is proportionally larger). Error in arrival location is also affected by the quality of drive tuning, and the accuracy of the computer controlling the jump; these factors can increase jump error by a factor of ten."