How work happens now

The four sandboxes.

The four ways work happens now: Human to Human, Human to Agent, Agent to Agent, and Agent to Human. Every interaction at work lands in one of the four. Name who is on each side and you know how to design it.

The four

Name who is on each side.

Each sandbox is named for who starts the exchange and who receives it. That order tells you almost everything about how to design it.

01

Human to Human

The work only people can do.

Trust, judgment, the hard conversation, the introduction that changes someone's year. This sandbox doesn't shrink when agents arrive. It's the reason to bring them in at all: every hour they take off your plate is an hour that can come back here.

02

Human to Agent

You direct, it does the lifting.

You set direction and keep judgment. The agent does the heavy pulling: the drafts, the digging, the grunt work that used to eat your afternoons. Most people meet AI here first, and most of the draining work belongs here.

03

Agent to Agent

Agents working while you sleep.

One agent hands its work to the next and the chain runs while you're away from the desk. It's the sandbox with the most promise and the least supervision, which is exactly why the fourth one exists.

04

Agent to Human

It reports back, you decide.

The agent comes back with what it found and what it did, and the decision stays with you. This is the sandbox that keeps the others honest. Skip it and you haven't automated your work, you've abandoned it.

Where it comes from

Naming the room is the oldest move in facilitation.

I spent my career designing rooms where people work together. Big rooms, hard problems, real stakes. The first move was always the same: name who is in the room and what they are there to do. Get that right and the agenda almost writes itself.

AI didn't break that rule. It added a new kind of participant. Now the room might be you and a person. You and an agent. A chain of agents with nobody watching. Or an agent walking back in with results and waiting on your call. Four rooms, four sandboxes, and the design changes completely depending on which one you're standing in.

That's the whole trick. A conversation between two people needs trust and time. A handoff to an agent needs a clear brief and a deadline. A chain of agents needs a checkpoint where a human decides. Lump them together as one blurry thing called "using AI" and you end up designing all of them badly.

Here's the claim, and the admission that goes with it. The claim: most teams work in one sandbox all day and never notice. The admission: I still catch myself doing the same thing. The frame isn't a badge you earn once, it's a habit you rebuild every morning. Which meeting on your calendar this week would change if you named who was really on each side?

Questions, answered

Frequently asked.

What are the four sandboxes?

The four ways work happens now: Human to Human, Human to Agent, Agent to Agent, and Agent to Human. Every interaction at work lands in one of the four. Human to Human is the work only people can do. Human to Agent means you direct and it does the lifting. Agent to Agent is agents working while you sleep. Agent to Human means it reports back and you decide.

Which sandbox should most work move to?

The draining, repeatable work should move to Human to Agent first: you direct, it does the lifting. Once a task proves itself there, it can graduate to Agent to Agent and run while you sleep. But every chain should end in Agent to Human, where it reports back and you decide. The move is never away from people. It's away from the work that drains them.

What stays Human to Human?

The work only people can do. Trust, judgment, the hard conversation, the introduction that changes someone's year. That sandbox doesn't shrink as the others grow. It's the point of the whole system: every hour the agents take is an hour that can come back to people.

The question

What sandbox are you in?

Take the last hour of your workday and name who was on each side of it. That's the whole exercise. Do it for a week and you'll start designing your days instead of just surviving them.