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Clip: SCIENCE FROM FISHER INFORMATION The aim of this book is to show that information is at the root of all fields of science. These fields may be generated by use of the concept of ‘‘extreme physical information,’’ or EPI. The physical information is defined to be the loss of Fisher information that is incurred in observing any scientific phenom- enon. The act of observation randomly perturbs the phenomenon, and sets off a physical process that may be modelled as a mathematical game between the observer and a ‘‘demon’’ characterizing the phenomenon. The currency of the game is Fisher information. The output of the game is the distribution law characterizing the statistics of the effect and, in particular, the acquired data. Thus, in a sense, the act of measurement creates the very law that governs the measurement. It is self-realized. This second edition ofPhysics from Fisher Informationhas been rewritten throughout in addition to including much new material. B. R

Filename: Science from Fisher Information - Bernard Roy Frieden.pdf

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