The Equivalence Problem

Virtual Museum · Inspect the amphora using different interaction methods

Drag to rotate · Scroll to zoom · Keyboard and buttons also work

INTERACTION ALTERNATIVES

Inspect the amphora

All controls change the same 3D object. Compare direct manipulation with discrete commands and automated assistance.

Greek-style amphora

Illustrative virtual museum object inspired by ancient Greek pottery. Amphorae were used for storing and transporting goods such as wine and oil. This is a stylized teaching model, not a digitized archaeological artefact.

Keyboard: ← → rotate, ↑ ↓ tilt, +/− zoom, R reset, I information, Space auto inspection.

Ready.

Discussion: Do mouse dragging, button presses, keyboard commands and automatic inspection provide functional, informational, experiential and agency equivalence?