#system #behavior > Nonlinearities are important not only because they confound our expectations about the relationship between action and response. They are even more important because they change the relative strengths of feedback loops. They can flip a system from one mode of behavior to another. > Many relationships in systems are nonlinear. Their relative strengths shift in disproportionate amounts as the stocks in the system shift. Nonlinearities in feedback systems produce shifting dominance of loops and many complexities in system behavior. -- [[Thinking in Systems -- A Primer]] [[Large systems are complex and counterintuitive with surprising behaviours]] > 在生活中有非常多问题无法用单一因素来全面解释，最主要的问题在于其中有太多的因素互相交织，这些因素彼此之间或加成、或抵销、或独立，连结成紧密的脉络，涌现出我们所看到的结果。 > -- [[全球人才强着学 -- 密涅瓦的思考习惯训练]]