In Italy, the local sign language for deaf people isn't legally recognised. But the well-known, expressive hand gestures have their own dictionary and wider appeal, to the frustration of deaf people.

In Italy, the local sign language for deaf people isn't legally recognised. But the well-known, expressive hand gestures have their own dictionary and wider appeal, to the frustration of deaf people.

Humans have a natural drive to reduce physical effort in nearly every activity, including using language. The ways that effort-reduction affect human language have been the subject of extensive ...