Plan with pure momentum.
The spec and the flow can't drift apart, because they are the same page. Change the paragraph and the drawing is right there to change with it.
- Diagrams and wireframes, dragged rather than redrawn
- A real editor, with the grammar for the language
- Set properly, and evaluated where it stands
- Numbers ruled and ranged, next to the argument
- Bars and plots, drawn from the numbers above them
Three things you stop doing.
None of these are interesting as features. They are interesting because you no longer have to do them.
Say what the drawing is. It appears on the page.
You describe the diagram in a sentence and it arrives as shapes you can drag and relabel — not a picture you have to redraw when the plan changes.
It reads the diagram, the table and the maths too.
Every other model in a document sees your prose and nothing else. This one is given the whole page, so it can answer using something you drew rather than something you wrote.
It makes the change itself, and waits.
No wall of prose in a sidebar explaining what you should go and do. It edits the page in front of you, and every change stands at the foot of the window until you keep it or throw it away.
Different work. Same page.
What changes between these is the document, not the tool. Each one shows the blocks that bench actually reaches for.
Nothing to set up. Open a page.
It is one document. Everything you need goes on it.