another thing to consider is the role sexual selection may have played
Precis of 'The mating mind: How sexual choice shaped the evolution of human nature’ (click) The supporting evidence includes human mate preferences, courtship behavior, behavior genetics, psychometrics, and life history patterns. The theory makes many testable predictions, and sheds new light on human cognition, motivation, communication, sexuality, and culture.
Sexual selection often creates an evolutionary positive-feedback loop that is highly sensitive to initial conditions. It therefore tends to produce extravagant traits that have high costs and complexity, yet these traits are often unique to one species, and absent in closely-related taxa.
The idea is that sexual feedback is responsible for the increase in the size of the brain through increased reliance on song and dance in courtship and selection for innovative displays.
Finally, language was a secondary result of this form of communication.
Who do you sing to?
Enjoy.
we are limited in our ability to understand
by our ability to understand
Rebel
AAmerican
.Zen
[Deist
{{{Buddha walks off laughing with joy}}}