the end point with the drill bit if the plan were revised a certain plan may have predetermined deviations or ranges of direction that are acceptable but still avoid parts of the formation that are not desired to pass through where the direction is not acceptable processing goes from block 228 to block 236 where the biasing mechanism 132 is activated the biasing mechanism 132 could be activated once or for a period of time alternatively the biasing mechanism 132 could be activated periodically in synchronization with the rotation of the drill bit the biasing mechanism 132 selects or emphasizes those components of the radial motion of the drill bit that occur in the desired direction s where the direction is acceptable as determined in block 228 processing continues to block 240 the biasing mechanism 132 achieves directional control by holding the direction in the desired direction s where un needed because the erratic motion of the drill bit is already in the desired direction s the biasing mechanism 132 is not activated in block 240 the current direction is communicated by the downhole controller 124 to the icis 104 after reporting processing loops back to block 212 for further management of the direction based upon any new instruction from the surface referring next to fig2 b a flowchart of another embodiment of.