Interactive

Hands the reader a control, so the picture changes when they move it and they see what the change costs.

You send a friend a chart of what a year of saving looks like. She writes back with a question the picture cannot answer. What if she goes out twice as often? So you redraw the chart with a different number in it, send it again, and get another question. Four rounds later she still has not seen the version that matches her actual life.

Interactive means you hand over a control instead of an answer. A slider, a filter switch, a node that opens when clicked, a card that can be dragged. The reader moves it and the picture recomputes in front of them. Whatever family you chose is still the thing on screen, a curve or a table or a tree. What changes is who gets to ask the next question. On a fixed page you pick the one view the reader sees. Here you pick the range of views and let the reader choose inside it.

The price is that nothing is seen until it is operated. Every control is a promise: move me and something will happen. If a reader moves one and the picture barely shifts, you have spent their attention and returned nothing, and they will not touch the next one. So set the default position to the state that already carries your point, and spend a control only on the question you expect them to ask next. The two states either side of the handle have to differ enough that the difference is the finding. When they do not, the control is decoration, and the fixed version is the honest one.