A linguistics professor says during a lecture that, “In English, a double negative forms a positive. But in some languages, such as Russian, a double negative is still a negative.

A linguistics professor says during a lecture that, “In English, a double negative forms a positive. But in some languages, such as Russian, a double negative is still a negative. However, in no language in the world can a double positive form a negative.”

A voice from the back of the room said "Stop posting this every 2 days"