For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.
艺术是光进入的伤口。
小说是反映世界的镜子，但也是打开新可能性的窗户。
The world is what it is; men who are nothing, who allow themselves to become nothing, have no place in it.
People with a sense of fulfillment think it a good world and would like to conserve it as it is, while the frustrated favor radical change.