Third podcast : Visualizing Data, The birth of a word

You can find this podcast on itunes u, in Vusualizing Data, Deb Roy, the birth of a word. It lasts 19min52.

This podcast is about a record life. The speaker, Deb Roy, filmed his personnal life during 3 years, he recorded 90 000 hours of video, 140 000 hours of audio & it represents 200 terabytes.
This special home video recording system was made for a research, it was made in order to understand what is the influence of social environement on language aquisition.
Because, during this 3 years, Bed Roy had a babyboy & thanks to differents methods (wordscape, worm...) we could really understand the process of language acquisition.
In the video, we can see that in the first year, the baby learnt 500 words.
In an audio recording, the speaker shew the evolution of the word "water" : we listen at first the word "gaga" & at the end we listen the word "water". 

I think it is very interesting to do that, like that we could really see how the word is used by child  in the everyday life. Moreover, with all the tools used, the analysis is more precise.
The example of "gaga" (water) souds like magical, it wonderfull to can listen an evolution like that.
I think we should do that more in order to understand the language acquisition.
Something in the podcast drew mu attention : Deb Roy said that it is no the child who learnt from the environment but it is the environment that learnt from the child.
I think it is a very amazing, incredible & special point of view...
At the beginning I didn't really understand what does it mean but now I suppose that it means that the child is a person & he influence the environment as a person.