Mergers are the most common problem in EyeWire. These are segments that the Artificial Intelligence (AI) has fused two segments together that don't belong. There is no way for the player to separate these segments, so they must learn to work around them. For small mergers that do not exit the cube a player may ignore them and continue their trace as normal. For larger mergers and/or mergers the exit the cube, the player may leave out the segment with the merger and continue their trace as normal.