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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Decoding Reality | 1/2 | https://en.wikipedia.org/wiki/Decoding_Reality | reference | science, encyclopedia | 2026-05-05T06:17:27.180330+00:00 | kb-cron |
Decoding Reality: The Universe as Quantum Information is a popular science book by Vlatko Vedral published by Oxford University Press in 2010. Vedral examines information theory and proposes information as the most fundamental building block of reality. He argues what a useful framework this is for viewing all natural and physical phenomena. In building out this framework the books touches upon the origin of information, the idea of entropy, the roots of this thinking in thermodynamics, the replication of DNA, development of social networks, quantum behaviour at the micro and macro level, and the very role of indeterminism in the universe. The book finishes by considering the answer to the ultimate question: where did all of the information in the Universe come from? The ideas address concepts related to the nature of particles, time, determinism, and of reality itself.
== Contents ==
=== "Creation Ex Nihilo: Something from Nothing" === Vedral believes in the principle that information is physical. Creation ex nihilo comes from Catholic dogma, the idea being that God created the universe out of nothing. Vedral says that invoking a supernatural being as an explanation for creation does not explain reality because the supernatural being would have to come into existence itself too somehow presumably from nothing (or else from an infinite regression of supernatural beings), thus of course the reality can come from nothing without a supernatural being. Occam's razor principle favours the simplest explanation. Vedral believes information is the fundamental building block of reality as it occurs at the macro level (economics, human behaviour etc.) as well as the subatomic level. Vedral argues that information is the only candidate for such a building block that can explain its own existence as information generates additional information that needs to be compressed thus generating more information. 'Annihilation of everything' is a more fitting term than creation ex nihilo Vedral states, as compression of possibilities is the process of how new information is created.
=== "Information for all Seasons" === Vedral uses an Italo Calvino philosophical story about a tarot-like card game as the kernel for his metaphor of conscious life arriving in medias res to a pre-existing contextual reality. In this game the individual observers/players (Vedral suggests: quantum physics, thermodynamics, biology, sociology, economics, philosophy) lay down cards with ambiguous meanings as an attempt to communicate messages to deduce meaning out of the other players' interactions. The results (information) of previous rounds establish contextual rules for observers/players in subsequent rounds. The point of this game is not established until the last card has been played as later cards can change the meaning of previous events, as in the case of the quantum explanation for the photoelectric effect instantly disproving classical physics. Vedral points out that in our reality there is no last card.
=== "Back to Basics: Bits and Pieces" === Shannon entropy or information content measured as the surprise value of a particular event, is essentially inversely proportional to the logarithm of the event's probability, i = log(1/p). Claude Shannon's information theory arose from research at Bell labs, building upon George Boole's digital logic. As information theory predicts common and easily predicted words tend to become shorter for optimal communication channel efficiency while less common words tend to be longer for redundancy and error correction. Vedral compares the process of life to John von Neumann's self replicating automata. These are enduring information carriers that will survive wear and tear of the individual by producing copies that can in turn go on to produce more copies.
=== "Digital Romance: Life is a Four-Letter Word" === Genetic code as an efficient digital information store, containing built in codon redundancy for error correction in transcription.
=== "Murphy’s Law: I Knew this Would Happen to Me" === Examines the second law of thermodynamics and the process of information increasing entropy. Maxwell's demon was thought to be a way around this inevitability; however, such a demon would run out of information storage space and have to delete unwanted data thus having to do work to do so, increasing entropy.
=== "Place Your Bets: In It to Win It" === Blackjack as controlled risk taking using Shannon's information theory probability formulas. Casino as a ′cool′ financial entropy source and the gambler as a ′hot′ financial source, once again the second law of thermodynamics means the flow is almost always from hot to cold in the long run. For managed risk spread bets widely and in high-risk high-reward investments (assuming a known probability), this is the Log optimal portfolio approach.
=== "Social Informatics: Get Connected or Die Tryin’" === Six degrees of separation means well connected people tend to be more successful as their social networks expose them to more chances to make choices they want. Schelling precommitment as strategy in social and self-control, for example burning your bridges by buying gym membership to help motivated self win over lazy self. Mutual information resulting in phase transitions in social and political demography as well as physical systems, like water freezing into ice at a particular critical temperature or magnetic fields spontaneously aligning in certain atoms when cooling from a molten state.
=== "Quantum Schmuntum: Lights, Camera, Action!" === Vedral examines the basis of quantum information, the qubit, and examines one-time pad quantum cryptography as the most secure form of encryption because of its uncomputability. Quantum entanglement demonstrates the importance of mutual information in defining outcomes in a reality.