AI问题矩阵

In short : A 2x2 matrix framework to categorize AI problems by their operational loop (Open vs Closed) and demand characteristics (Finite vs Infinite), helping founders identify the highest-value opportunities.

The demand for software is infinite. Kyle Daigle, GitHub’s COO, made the case concrete :

There were 1 billion commits in 2025. Now, it’s 275 million per week, on pace for 14 billion this year if growth remains linear (spoiler : it won’t.) GitHub Actions has grown from 500M minutes/week in 2023 to 1B minutes/week in 2025, and now 2.1B minutes so far this week.

But that’s not true for all roles. I use a 2x2 matrix that separates work along two axes : the ceiling of demand & whether the loop can be closed.

On one axis, demand. Infinite Demand means more output creates more value. There is no saturation point.

On the other axis, open vs closed loops. Closed Loop means AI can verify correctness without human intervention.

Closed Loop + Infinite Demand = Economic Engines. Software engineering lives here. AI writes the code. Tests verify correctness. More code enables more features. Companies will always need more software.

Closed Loop + Finite Demand = Efficiency Plays. AI bookkeeping categorizes transactions, reconciles accounts, files returns. Deterministic rules applied to numbers. But a company only has so many transactions. A company files taxes once a year. It closes the books each quarter.

Open Loop + Infinite Demand = Creative Amplifiers. Content creation & marketing strategy. AI can generate a thousand ad variations or blog posts. A person must judge the right ones to publish. Does this ad campaign align with our values? Is this strategic positioning correct? Some problems are open loop today but will close over time.

Open Loop + Finite Demand = Utility Tools. Preparing 10-Ks & 10-Qs. Legal contract review. Insurance claims processing. One report per quarter, one contract per deal. AI makes the work faster, but doesn’t create new work to do.

Every role fits somewhere on this 2x2. I would put venture capitalist in finite demand & open loop. There’s only a certain amount of venture capital dollars entering the ecosystem in a year, & investment selection remains an open problem.

Where does yours fit?