Phys.Org:Language and tool-making skills evolved at same time, study says

A study of brain activity while making stone tools and while taking a standard language test showed that the same part of the brain was active for both tasks. This suggests that the ability to have a language would have developed at the same time as the ability to make stone tools.

When we developed the ability to have a language has been a big question for paleoanthropologists for many years. This is a step toward understanding how it came about.

Bill Gill

C is not the speed of light in a vacuum.
C is the universal speed limit.