“A hypothesis is empirical or scientific only if it can be tested by experience. A hypothesis or theory which cannot be, at least in principle, falsified by empirical observations and experiments does not belong to the realm of science.” IfsDoePrinciplesTheoryExperimentsObservationRealmsTestedHypothesis Author:Francisco J. Ayala
“Toby Tyrrell unravels the various formulations of Gaia and explains how recent scientific developments bring the hypothesis into question. His criticisms are insightful, profound, and convincing, but fair. On Gaia is wonderfully informative and a pleasure to read.” PleasureDevelopmentFairsCriticismProfoundVariousInsightfulHypothesisConvincingInformativeGaiaToby Author:Francisco J. Ayala