Artículos con la etiqueta ‘Física y bits’

Where the «it from bit» come from?

Por • 10 jun, 2013 • Category: Filosofía

In his 1989 essay, John Archibald Wheeler has tried to answer the eternal question of existence. He did it by searching for links between information, physics, and quanta. The main concept emerging from his essay is that «every physical quantity, every it, derives its ultimate significance from bits, binary yes-or-no indications». This concept has been summarized in the catchphrase «it from bit». In the Wheeler’s essay, it is possible to read several times the echoes of the philosophy of Niels Bohr. The Danish physicist has pointed out how the quantum and relativistic physics – forcing us to abandon the anchor of the visual reference of common sense – have imposed a greater attention to the language. Bohr did not deny the physical reality, but recognizes that there is always need of a language no matter what a person wants to do. To put it as Carlo Sini, language is the first toolbox that man has at hands to analyze the experience. It is not a thought translated into words, because to think is to operate with signs as reminded us by various philosophers from Leonardo da Vinci to Ludwig Wittgenstein. […]

An Acataleptic Universe

Por • 27 abr, 2013 • Category: Ciencia y tecnología

John Wheeler advocated the principle that information is the foundation of physics and asked us to reformulate physics in terms of bits. The goal is to consider what we know already and work out a new mathematical theory in which space, time and matter are secondary. An application of the converse of Noether’s second theorem to the holographic principle implies that physics must have an underlying hidden symmetry with degrees of symmetry that match physical degrees of freedom in order to account for the huge redundancy of information in the interior of a black-hole. I have been working on a theory that builds infinite dimensional symmetries using layers of quantisation from information as suggested by Wheeler’s contemporary Carl von Weizs\»acker.