Let the audience ask a question the presentation cannot predict.

A fixed explanation selects a route through the subject. An interactive explanation can let a person examine a relationship, change a condition, or follow a question into more detail.

That can be useful when the subject is difficult to understand from someone else's sequence alone.

Howard Pearlmutter brings human-interface perspective together with modeling, graphics, architecture, and practical software development.

The first question is what the audience needs to become able to understand or do. That purpose can guide the form: a diagram with useful depth, an interactive model, a simulation, a prototype, or a working tool.

A focused initial contribution can examine the audience, the underlying model, and the distinction the current representation makes difficult to see. A prototype can test whether a different interaction helps.

The work can remain bounded. Your team can use the resulting model or artifact, with further implementation or technical transfer considered separately where useful.

The relevant evidence includes NASA's human-interface study, the factory-design executive system, a network diagnostic console, and current Telos prototypes.

Each used a different form because the audience had a different job.

To consider your own subject, ask what someone repeatedly needs explained. Which part would become clearer if the person could inspect it directly? What context must remain visible? Which interaction could help the person discover the relationship?

Explore pictures and words, media prototyping, or a team session. If the question is already clear enough to discuss, continue through the contact route.

The goal is a more useful way into the subject, shaped around the person who needs it.