This section is the most difficult to handle. In some cases the methods are excellent, but the implementations are so poor that they fail to display the merits of a path planning method. Up to now researchers have occasionally included run-times and machines, for their discussions, although some have not tested their methods. This variation is noticable, thus some standardization is needed. In this section some simple means for comparison are suggested. A quick list of general implementation evaluation criteria is also in order,