Kacam.net

Product design

转化率从 3% 涨到 5%

转化率从 3% 涨到 5%,群里已经有人说「提升了 67%」。

Copy the prompt, then pick a model. It plays the interviewer and asks you through it scene by scene instead of handing you the answer.

On a phone with the app installed, the system opens the app directly. Links cannot open external apps inside WeChat — open it in a browser first.

The copied text ends with the answer key the model grades you against. Don't read it yourself first — working it out on your own is the point.

它会先给你一组数:访问从 100 万掉到 40 万,注册从 3 万掉到 2 万 —— 转化率确实涨了。只看比值不看绝对量的人,会在周会上把坏消息讲成好消息。

第三幕再给一组按渠道拆开的数,每一档都在变差,合计却变好了。这个现象有名字,但比名字有用的是那一问:要看到这一层,最少要按哪几个维度拆?

最后一问很现实:转化率涨了、注册量也涨了,但这批人留存差一半 —— 你上不上线。

★★★★☆ · about 35 min · Tests: 分子分母的绝对值、分母口径、时间窗口、辛普森、看下游

What this one tests

Metric design Funnels and retention Evidence and numbers

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Notes from people who did this one

Nobody has written yet. After you run it, say what came out of the conversation — which scene stumped you, which conclusion you changed afterwards.

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How to use this

There is no model answer here — but there are definite wrong answers. Only three things make a case hold up, and every prompt's answer key carries a "common wrong answers" section that is more useful than the checklist itself.

The three things that make it hold up

  1. You can say whose problem this is and what it is — **with evidence** (not "I think users would want it")
  2. You can say what success looks like — **and what that number is today** (no baseline, no acceptance criteria)
  3. You can name the cost and what you gave up — **the hardest one to fake**, which is why every prompt hunts for it

How to start

  1. Pick a question, open it, copy the prompt.
  2. Paste it into a brand-new conversation — not one where you already discussed it.
  3. Say nothing. Wait for its first question.

Four commands you can call out at any time

  • 跳过 move to the next scene now
  • 提示 give a direction, not the answer
  • 直说吧 spell this point out in full, then keep pressing on the trade-offs
  • 复盘 jump to the wrap-up and print the review card

Three traps

  • Don't rush to a solution. More than half the lost points here come from designing before asking — especially describing features before defining what success means.
  • Expect to be pushed for numbers. "It'll perform better", "users will like it" get cut off: which metric, what is it today, and when do you look?
  • When it starts praising you, point it back to rule five — feeling validated crowds out noticing what you missed.

Start with the north star metric; it underpins everything else. Then pick by what's on your plate: a backlog you can't order → prioritisation; nobody using it or retention sliding → retention and onboarding; need to price something → pricing. Save the experiment review for later, and keep redoing the one about turning a one-line request into a spec — it's the closest to daily work.