As knowledge increases, there is a "clockwise drift" from chaotic through complex and complicated to simple. Similarly, a "buildup of biases", complacency or lack of maintenance can cause a "catastrophic failure": a clockwise movement from simple to chaotic, represented by the "fold" between those domains. There can be counter-clockwise movement as people die and knowledge is forgotten, or as new generations question the rules; and a counter-clockwise push from chaotic to simple can occur when a lack of order causes rules to be imposed suddenly.[1][2]