做产品 PMaker
空格的键盘
低频 · 高痛 一年报一次税,出事很麻烦 能收钱,但很难养成习惯 高频 · 高痛 每周都要弄,每次都难受 先做这一格 低频 · 低痛 偶尔想起来会不方便 直接砍掉 高频 · 低痛 天天碰,但也没多难受 留得住人,但不好收钱 痛感 频率

先看这两个维度落在哪一格,再乘上第三个维度:有多少人。

Is It Worth Doing

A need being real doesn't mean it's worth doing. Between real and worth-it sit three numbers: how many people, how often they hit it, and how much it hurts each time.

What you'll run into
  • 需求都是真的,但做完发现没什么人碰
  • 为一个季度用一次的场景做了很复杂的功能
  • 不知道该先做哪个,最后按谁提的来排

Three dimensions

维度怎么问出来它影响什么
人数 符合这个描述的人有多少 决定天花板。人数少但付费高,也能成立
频率 最近两次分别是什么时候 决定能不能养成习惯,也决定留存
痛感 那次没做好,后果是什么 决定他愿不愿意付钱,以及愿意付多少
The danger of descriptions like the one on the right is that they can't be falsified. Before you build it you don't know it's wrong; after you build it you still don't know which step was wrong.
三个维度不是加起来看,是乘起来看 人数 决定天花板 × 频率 决定能不能养成习惯 × 痛感 决定愿不愿意付钱 = 值不值 一百万人 每年遇到一次 小麻烦 乘出来接近零 十个人 每天都遇到 很难受 这个更值得做 乘法里的零补不回来 三个数里有一个接近零就直接砍,别指望另外两个补得回来。算不出量级的先别做——算不出来说明你对这群人还不够了解。
The danger of descriptions like the one on the right is that they can't be falsified. Before you build it you don't know it's wrong; after you build it you still don't know which step was wrong.

Do a rough calculation

It doesn't need to be precise—order of magnitude is enough. The point of this rough math is to turn "feels important" into a number that can be challenged.

算得过来
目标人群 5 万 个小微商家
其中有这个问题的约 30%
每周遇到 2 次,每次半小时
愿意付 ¥30/月 的约一成
1500 付费用户 · 年收 54 万
算不过来
目标人群 很多人
大家应该都有这个问题
偶尔会遇到
应该有人愿意付费
这不是估算,是愿望
The danger of descriptions like the one on the right is that they can't be falsified. Before you build it you don't know it's wrong; after you build it you still don't know which step was wrong.

When to cut