In The Botany of Desire, Michael Pollan is trying to say is that all food are being food are being processed through genetic manipulation and no longer natural. He claims that as the world evolves, agriculture is also advancing. However the impact can be catastrophically to the human being (such as health issue, etc). Although it’s indirectly saying that all plants have some sort of network connection through the roots.

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http://i.ytimg.com/vi/FY0cneCMILY/0.jpg