Example of recurrent change. Still images from video dictionary entries that illustrate the phonological pattern of thumb extension. Both signs are produced with four fingers extended, but the sign ...

Computers need programming languages to function. That’s just a simple fact of life. However, these languages didn’t just spring up out of nowhere. They were developed by people for explicit purposes.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. It’s relatively easy to trace a written linguistic history—there ...