The first problem is hard to quantify. It is a designer’s call what “too many responsibilities” is (well, only until we see it in code, then it will be more apparent). If you were to say “one responsibility per module”, you would often end up with a plethora of small modules. Such a situation increases the cognitive load of the design. The same will happen if you assign too many responsibilities to each module. Of course, the High Cohesion pattern is something that will come in handy here.
（2）化工板块景气度与投资机会：明确看好2026年石化行业景气度反转，核心逻辑为美联储降息将带动全球经济共振。目前行业仅少部分品种通过联合减产实现了改善，整体景气度反转尚未全面发生，但当前股价已有所上涨，一定程度反映了市场预期。后续需关注两个关键节点：一是3月下旬的春季躁动行情，二是4-5月后全球经济共振的实际表现，叠加油价的催化作用，对化工中游板块依旧保持乐观态度。上游领域具备较大弹性，因油价走势彻底扭转了此前市场对油价的悲观预期——2025年近9成买方及多数卖方均看空油价，当前市场预期正逐步修复；上游成长型公司如中脉、洲际等体量较小，在预期修复过程中弹性突出。国内标的方面，宝丰能源、民营大炼化等公司虽已有所上涨，但后续仍有上涨空间。此外，各品种因联合减产，价差较12月已有不小改善，预计三四月份行业景气度提升后，其价差改善的空间依然存在。，推荐阅读Line官方版本下载获取更多信息
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Generalization: At let boundaries, free type variables in a type are，详情可参考体育直播