Put yourself in the baby's bootees: mum' breast, soft cooing, milk taste and smell, blankies, being held and being warm - these are all synesthesically almost one - to start with. But I imagine (citation needed) that as sensations begin to be 'categorized' or patternized, that 'dialogue' is discovered. "I hear sounds, I make sounds'. The baby is communicating.
And for me, it is communication that leads to enlightenment ;-)
Helen Adams Keller (June 27, 1880-June 1, 1968) was an American author, political activist, and lecturer. She was the first deafblind person to earn a Bachelor of Arts degree.[1][2] The story of how Keller's teacher, Anne Sullivan, broke through the isolation imposed by a near complete lack of language, allowing the girl to blossom as she learned to communicate, has become known worldwide through the dramatic depictions of the play and film The Miracle Worker.
Not too much later, these phonemes are combined into words and proto-words. "No" seems to be not only easily learned but the most common of all words used in the first stage of verbal communication. :-)
Put yourself in the baby's bootees ...
Not unless, and until, I reincarnate. :-D
Some of the worst papers I've read are Baby Studies claiming all kinds of things ... based on experimenter projection, IMNSHO.
I would say it is communication that leads to mutual acknowledgement of consciousness. So Internet will be recognized as soon as it has its own webpage that spontaneously updates :) A vote for PES is a vote for EPP! A vote for EPP is a vote for PES! Support the coalition, vote EPP-PES in 2009!