Your novel is a sentence: the branching method in practice
September 14, 2026
It's one thing to describe the Layer Method (sentence, paragraph, branches, expand) and another to watch it run on a real seed. So here's the same worked example from the site's own front page, taken one layer further than it goes there.
Layer 1
The seed is one sentence. Something happens to someone:
A lighthouse keeper finds a body on the rocks and does not report it.
The whole book, in miniature. Everything below is expansion of exactly this.
Layer 2
Expand it to a paragraph, sixty words minimum, no ceiling:
The storm had been running three days when Aoife found him, wedged in the rocks below the north gallery. She went down at first light with the boathook and did not use it. He was younger than her son and wearing a coat that had cost money. She stood in the spray a long time. There was the radio in the lamp room, and the mainland, and the questions they would ask her about the year she did not talk about. Then she climbed back up, made tea, and wrote nothing in the log for that day.
Notice what happened. A name, a time frame, a second character, a decision that isn't stated outright ("did not use it"): none of that was in the seed. It couldn't have been; a nine-word sentence has no room for it. The paragraph is where the book starts accumulating the specifics a seed sentence structurally can't hold.
Layer 3
Read the paragraph back and pull sentences out of it. Three or more, each becoming its own branch:
The storm had been running three days when Aoife found him.
She went down at first light with the boathook and did not use it.
He was younger than her son and wearing a coat that had cost money.
She wrote nothing in the log for that day.
Four branches from one paragraph. Each one can now grow independently, at whatever depth it turns out to need. Some of these might stay exactly this short in the finished manuscript. Others won't.
Layer 4
Take one branch and expand it again. Here, the third line, about the coat:
The gallery stair was slick and she took it the way she took everything now, one hand on the rail, counting. Sixty-one steps. At the bottom the wind came off the water hard enough to make her turn her face. When she turned it back he had not moved. She was still holding the boathook. She had carried it down to shift him into the water and she put it against the rock and left it there. The tide would do it or it would not. She went back up counting the same sixty-one and did not look down again.
That paragraph didn't come from nowhere. The stair, the count of sixty-one steps, the boathook left against the rock: every concrete detail in it is either already implied by the branch it's expanding or a direct consequence of it. That is what the check underneath all of this asks, layer after layer. Not "is this good," which no automated reader can tell you, but "does this actually grow out of what's above it," which is checkable every time, without anyone's taste being involved.
Four layers in, and this is still one branch out of four from a single paragraph. The other three haven't been touched yet. This is what "the book is whatever you wrote deepest on each branch" means in practice. There's nothing figurative in it. It's just what happens when you keep making the same move, branch by branch, as many times as the book needs.