A temperament instrument that maps how your mind handles proof, abstraction, space, change, discreteness, uncertainty, computation, models, and constraint into the math branch most worth learning or revisiting. / 一个性情测试，用你处理证明、抽象、空间、变化、离散性、不确定性、计算、模型和约束的方式，匹配最值得学习或重新拾起的数学分支。

You are helping plan a trip with time, money, and people. What do you do first? / 你帮人计划一次行程，有时间、钱和人。你第一步会做什么？

Write down what cannot move. / 先写下哪些条件不能动。Find the points where the plan must change after new information. / 找出哪些点在新信息出现后必须调整。Draw the route so the whole thing has shape. / 画出路线，让整件事有形状。List a few possible routes and compare them. / 列出几条路线，再逐个比较。

You are learning a new board game. You start to understand it when: / 你在学一个新的桌游。你开始觉得明白，是因为：

The rules and edge cases are clear. / 规则和特殊情况说清楚了。You see how one move changes the next few turns. / 你看出一步棋怎样改变后面几步。You see the same pattern behind different moves. / 你看出不同走法背后的同一个模式。You know which moves are risky under uncertainty. / 你知道哪些走法在不确定时风险更大。

A recipe keeps failing. You followed the instructions. Your first thought is: / 一个菜谱总是失败。你明明照做了。你第一反应是：

One instruction is too vague to be trusted. / 有一句说明太含糊，不能信。One step changes the later steps more than it looks. / 有一步对后面的影响比表面更大。Try a small version and change one thing. / 做一个小版本，只改一个地方。Find the moment where the texture changes. / 找出质地发生变化的那一刻。

You open a messy spreadsheet. The fastest way for you to understand it is: / 你打开一个很乱的表格。你最快理解它的方式是：

Check what each column means before trusting the numbers. / 先确认每一列是什么意思，再相信数字。Find which column actually changes the outcome. / 找出哪一列真的会改变结果。Group rows until the mess becomes clean types. / 把行分组，直到混乱变成清楚类别。Sort and test simple rules directly on the data. / 排序后直接测试简单规则。

You need to explain a hard idea to a smart friend. You would probably start with: / 你要给一个聪明朋友解释一个难想法。你大概会先讲：

The exact words they must understand first. / 他们必须先懂的精确词。What can be seen, what can be changed, and what happens after. / 什么能被看见，什么能被改变，之后会怎样。A simple object they can hold in their head. / 一个能在脑子里抓住的简单对象。A few examples that rebuild the idea. / 几个能重建想法的例子。

You are fixing a bug. The clue you trust most is: / 你在修一个 bug。你最相信的线索是：

A state breaks the rule the program promised to keep. / 某个状态破坏了程序承诺保持的规则。The failure appears after timing or load changes. / 时序或负载变化后，失败才出现。A small input reproduces the failure every time. / 一个小输入每次都能复现失败。The data changed shape somewhere in the middle. / 数据在中间某处变了形状。

You are reading an old note you wrote months ago. It comes back fastest when you find: / 你在重读几个月前写的笔记。最快恢复记忆的是：

The definition and why the conclusion follows. / 定义，以及结论为什么成立。The variable you were trying to control. / 当时想控制的那个变量。The main diagram or mental image. / 主图，或脑子里的图像。The examples that rebuilt the idea. / 当时重建想法的例子。

You are watching someone make a bad decision. What bothers you most? / 你看见一个人在做坏决策。最让你不舒服的是：

They never defined success. / 他们没有定义成功。They ignore how the system reacts after they act. / 他们忽略了行动之后系统会怎么反应。They treat one noisy example as proof. / 他们把一个有噪声的例子当成证明。They choose before checking the real limits. / 他们没看清真实限制就先选。

You have a quiet afternoon and choose one thing to play with. You choose: / 你有一个安静下午，想随便玩点东西。你会选：

A puzzle where one hidden assumption changes everything. / 一个隐藏假设会改变一切的谜题。A small system you can adjust until it settles. / 一个可以调到稳定的小系统。A pattern of shapes or symmetries. / 一组形状或对称。A small game about arrangements and impossible cases. / 一个关于安排和不可能情况的小玩法。

A tool or idea feels beautiful to you when: / 一个工具或想法让你觉得漂亮，是因为：

It is built from clean rules. / 它由干净规则搭起来。It corrects drift before the whole thing fails. / 它在整体失败前修正偏移。Many cases suddenly look like the same thing. / 很多情况突然像同一件事。It turns limits into a decision you can make. / 它把限制变成一个能做的决定。

Math Branch Cognition Match / 数学分支认知匹配