I think answer is near. Just listen animals. Birds, mammals, reptiles, insects all speak different which we can't understand it's grammar, even we think they don't speak. We assume they just make simple anger, threat, alarm, invitation sounds without intelligence.

Also a word can be pronounce in infinitely different. It means a whole language can be consist of only one word's different pronounce.

Furtermore, there are no need to sounds to form a language. Colors, light, pressure, scent can also be ways to communicate.

I think that the answer is around us. Just listen to the animals. Birds, mammals, reptiles, insects all speak differently and we can't understand its grammar. We even think that they don't speak. We assume they just make simple anger, threat, alarm, invitation sounds without intelligence.

Also a word can be pronounced in infinitely different ways. It means a whole language can be consist of only one word's different pronounciations.

Furthermore, there are no need of sounds to form a language. Colors, light, pressure, scent can also be ways to communicate.

I think answer is near. Just listen animals. Birds, mammals, reptiles, insects all speak different which we can't understand it's grammar, even we think they don't speak. We assume they just make simple anger, threat, alarm, invitation sounds without intelligence.

I think answer is near. Just listen animals. Birds, mammals, reptiles, insects all speak different which we can't understand it's grammar, even we think they don't speak. We assume they just make simple anger, threat, alarm, invitation sounds without intelligence.

Also a word can be pronounce in infinitely different. It means a whole language can be consist of only one word's different pronounce.

Furtermore, there are no need to sounds to form a language. Colors, light, pressure, scent can also be ways to communicate.