dec-cognitive-load

基于认知负荷理论分析界面复杂性并给出简化与保留建议。

从认知负荷的三类来源（intrinsic、extraneous、germane）来判断界面哪部分要简化、哪部分要保留。当某个页面让人感到复杂或卡顿、需要拆分流程或改文案时用它来决策。特别之处是不会一刀切去掉功能，而是把任务难度、设计噪音和有价值的学习负荷分别处理。

# Cognitive Load Theory

Three distinct sources of mental effort. The designer's job is to cut one, manage another, and protect the third.

- **Intrinsic** — inherent task difficulty. Can't be removed, but *managed*: chunk it, sequence it, apply progressive disclosure.
- **Extraneous** — overhead imposed by poor design (clutter, inconsistency, unclear copy, bad layout). **Eliminate this** — it's pure waste and squarely the designer's responsibility.
- **Germane** — productive effort spent building useful mental models. **Preserve this** — it's the user learning the system; don't strip it out chasing "simplicity."

## How to apply

- When a screen overwhelms, first ask: is this **intrinsic**