The Fifth Parameter: Volume One: Governance, Evidence, and Institutional Trust in Accessibility AI

There are four things a machine can see when it watches a pair of hands: handshape, location, movement and palm orientation. There is a fifth. The face, the eyes, the head and the body carry much of the grammar of a signed language, and that is the dimension sign language artificial intelligence most often fails to capture.
The Fifth Parameter is an independent critical publication on sign language AI. This volume collects its first fifteen issues, published between June and September 2026. ...