You arrive. The board is empty. The session ends when the question is answered — when the next move is clear, the architecture is mapped, the decision is made.

Sometimes that takes an hour. Sometimes it takes three. The work is finished when the work is finished.

Strategic thinking, live, at the whiteboard, to a conclusion.

The strategic question you've been carrying without having sat with. The thing you keep meaning to think about but haven't.

The mid-altitude problem that's stuck. Where the system is producing the wrong output and you can't see where the leverage is.

The tactical decision you've been over-thinking. Where you know what to do but haven't given yourself permission to do it.

These are the three altitudes. Most weeks have at least one of them building up. The session moves through whichever altitude needs the work.