Infinite canvases

Linear media impose structure on ideas: a slide deck forces them into a sequence, and a document forces them into a hierarchy. An infinite canvas places ideas in two-dimensional space, where position, proximity, and connection carry meaning. The viewer controls scale, zooming out to see the whole structure or in to examine a single element.

Canvases serve two distinct functions:

• Sorting surfaces

  When items are arranged spatially in categories, classification becomes direct manipulation. Moving an item is the decision, and the final arrangement is the record. Scripts attached to the canvas can compute tallies and enforce rules as items move.

• Explanation surfaces

  A presentation laid out as a map rather than a sequence makes the relationships between ideas visible. Each audience member can follow a thread in the order that makes sense to them.

Canvases are also programmable. Custom elements can run live logic, such as a color-contrast calculator or rendered mathematical notation, which turns the canvas from a drawing surface into an interactive working environment.

Drilling into images to learn

In most instructional material, images are terminal: they are viewed and then left behind. Drill-down treats an image as a point of departure. Selecting any region produces a new, more detailed illustration of that region, along with an explanation. Each result is linked to its parent, so exploration builds a navigable tree of understanding instead of a flat sequence of pictures.

Because every drill also produces a structured text description, the same exploration can be read, listened to, or searched. The image and its explanation are two views of one underlying piece of content.