The book is based on the observation that communication is the central operation of discovery in all the sciences. In its «active mode» we use it to «interrogate» the physical world, sending appropriate «signals» and receiving nature's «reply». In the «passive mode» we receive nature's signals directly. Since we never know a prioriwhat particular return signal will be forthcoming, we must necessarily adopt a probabilistic model of communication. This has developed over the approximately seventy...
