Physics of Information

#1
This popped up on my suggested YouTube videos. I Thought it was shareable.


From the YouTube description:

Published on Jan 23, 2015
Some of the biggest names in modern physics, Professor Leonard Susskind, Stanford University's world renowned theoretical physicist and one of the fathers of string theory, Professor Anthony Leggett, Nobel Laureate in Physics for his work on superfluidity, Professor Seth Lloyd arguably the world's foremost quantum computer engineer at MIT and Professor Christopher A. Fuchs - adjunct professor at University of New Mexico and Professor at the Max-Planck-Institute of Quantum Optics.

These renowned scientists discuss on a very distinguished panel the ideas, theory, scientific observation and experiments behind the fascinating, and sometimes surreal, study of black hole physics, entropy, quantum mechanics, entanglement and the holograms - all key areas in the physics of information theory.

This discussion was filmed at the Perimeter Institute for Theoretical Physics, an independent research center for the foundations of theoretical physics located in Waterloo, Ontario, Canada. The host of the debate is "Quirks and Quarks" radio host Mr. Bob McDonald.
 
#4
Isn't information the symbolic representation of something else? If that "something else" is also information, then isn't the universe akin to a hall of mirrors?
 
#5
Isn't information the symbolic representation of something else? If that "something else" is also information, then isn't the universe akin to a hall of mirrors?
There is information in the the structure and content of all physical interaction. This physical information is the focus of the early part of the video and one of the basics of how information gets around. The information that is encoded by living things is mutual information, where the purposeful transfer of meaning takes place. The sender must expect the receiver to be able to decode the signal. Hence, both sender and receiver must share the "language" in their own database of what to abstract from a transmission. This applies to DNA/RNA messages in a cell - right up to poetic metaphor in art.
 
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