There is little evidence that plants have a centralized area in which to digest information and make decisions based on multiple inputs and outputs, and the book does not persuasively suggest how consciousness could arise without it. Planta Sapiens, however, contains a fascinating description of how plants interact with the environment in myriad ways.
To his credit, Calvo — while freely admitting he was not trained as a plant scientist — cites articles by plant experts critical of his perspective. At the same time, though, he conveys a sense that naysayers are just not sufficiently open-minded to accept plant experience for what it is ... too often, Calvo undermines his case by using over-the-top language... and inappropriate analogies to human behavior ... Despite the book’s drawbacks, Calvo raises some fascinating questions.