Turing machine – Wikipedia, the free encyclopedia

Turing machine – Wikipedia, the free encyclopedia.

Turing machine is a device that manipulates symbols on a strip of tape according to a table of rules. Despite its simplicity, a Turing machine can be adapted to simulate the logic of any computer algorithm, and is particularly useful in explaining the functions of a CPU inside a computer.

The “Turing” machine was described by Alan Turing in 1936,[1] who called it an “a(utomatic)-machine”. The Turing machine is not intended as a practical computing technology, but rather as a hypothetical device representing a computing machine. Turing machines help computer scientists understand the limits of mechanical computation.

Turing gave a succinct definition of the experiment in his 1948 essay, “Intelligent Machinery”. Referring to his 1936 publication, Turing wrote that the Turing machine, here called a Logical Computing Machine, consisted of:

…an unlimited memory capacity obtained in the form of an infinite tape marked out into squares, on each of which a symbol could be printed. At any moment there is one symbol in the machine; it is called the scanned symbol. The machine can alter the scanned symbol and its behavior is in part determined by that symbol, but the symbols on the tape elsewhere do not affect the behaviour of the machine. However, the tape can be moved back and forth through the machine, this being one of the elementary operations of the machine. Any symbol on the tape may therefore eventually have an innings.[2] (Turing 1948, p. 61)

A Turing machine that is able to simulate any other Turing machine is called a universal Turing machine (UTM, or simply a universal machine). A more mathematically oriented definition with a similar “universal” nature was introduced by Alonzo Church, whose work on lambda calculus intertwined with Turing’s in a formal theory ofcomputation known as the Church–Turing thesis. The thesis states that Turing machines indeed capture the informal notion of effective method in logic and mathematics, and provide a precise definition of an algorithm or ‘mechanical procedure’.

First computer to sing – Daisy Bell – YouTube

“Daisy Bell” was composed by Harry Dacre in 1892. In 1961, the IBM 7094 became the first computer to sing, singing the song Daisy Bell. Vocals were programmed by John Kelly and Carol Lockbaum and the accompaniment was programmed by Max Mathews. This performance was the inspiration for a similar scene in 2001: A Space Odyssey.

via First computer to sing – Daisy Bell – YouTube.

Ludwig Wittgenstein – Wikipedia, the free encyclopedia

The early Wittgenstein was concerned with the logical relationship between propositions and the world, and believed that by providing an account of the logic underlying this relationship he had solved all philosophical problems. The later Wittgenstein rejected many of the conclusions of the Tractatus, arguing that the meaning of words is constituted by the function they perform within any given language-game.
Ludwig Wittgenstein – Wikipedia, the free encyclopedia
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Metatheatre – Wikipedia, the free encyclopedia

Metatheatre – Wikipedia, the free encyclopedia.

The term “metatheatre“, coined by Lionel Abel, has entered into common critical usage; however, there is still much uncertainty over its proper definition and what dramatic techniques might be included in its scope. Many scholars have studied its usage as a literary technique within great works of literature.

Abel described metatheatre as reflecting comedy and tragedy, at the same time, where the audience can laugh at the protagonist while feeling empathetic simultaneously.[1] The technique reflects the world as an extension of human conscience, not accepting prescribed societal norms, but allowing for more imaginative variation, or a possible social change.[2]

Abel also relates the character of Don Quixote as the prototypical, metatheatrical, self-referring character. He looks for situations he wants to be a part of, not waiting for life, but replacing reality with imagination when the world is lacking in his desires.[3] The character is aware of his own theatricality.

Alva Ebersole adds to the idea of metatheatrical characters saying that the technique is an examination of characters within the broader scheme of life, in which they create their own desires and actions within society.[4] He adds that role-playing derives from the character not accepting his societal role and creating his own role to change his destiny.

The word “metatheatre” comes from the Greek prefix ‘meta’, which implies ‘a level beyond’ the subject that it qualifies; “metatheatricality” is generally agreed to be a device whereby a play comments on itself, drawing attention to the literal circumstances of its own production, such as the presence of the audience or the fact that the actors are actors, and/or the making explicit of the literary artifice behind the production.

Some critics use the term to refer to any play which involves explicit ‘performative’ aspects, such as dancingsinging, or role-playing by onstage characters, even if these do not arise ‘from specifically metadramatic awareness’ ; whereas others condemn its use except in very specific circumstances, feeling that it is too often used to describe phenomena which are simply ‘theatrical‘ rather than in any sense ‘meta’.

Stuart Davis suggests that “metatheatricality” should be defined by its fundamental effect of destabilizing any sense of realism:

‘Metatheatre’ is a convenient name for the quality or force in a play which challenges theatre’s claim to be simply realistic — to be nothing but a mirror in which we view the actions and sufferings of characters like ourselves, suspending our disbelief in their reality. Metatheatre begins by sharpening awareness of the unlikeness of life to dramatic art; it may end by making us aware of life’s uncanny likeness to art or illusion.

By calling attention to the strangeness, artificiality, illusoriness, or arbitrariness — in short, the theatricality — of the life we live, it marks those frames and boundaries that conventional dramatic realism would hide.”[11]

 

Macrocosm and microcosm – Wikipedia, the free encyclopedia

Macrocosm and microcosm is an ancient Greek Neo-Platonic schema of seeing the same patterns reproduced in all levels of the cosmos, from the largest scale (macrocosm or universe-level) all the way down to the smallest scale (microcosm or sub-sub-atomic or even metaphysical-level). In the system the mid-point is Man, who summarizes the cosmos.

The Greeks were philosophically concerned with a rational explanation of everything and saw the repetition of the golden ratio throughout the world and all levels of reality as a step towards this unifying theory. In short, it is the recognition that the same traits appear in entities of many different sizes, from one man to the entire human population.

Macrocosm/microcosm is a Greek compound of μακρο- “Macro-” and μικρο- “Micro-“, which are Greek respectively for “large” and “small”, and the word κόσμος kósmos which means “order” as well as “world” or “ordered world.”

Today, the concept of microcosm has been dominated by sociology to mean a small group of individuals whose behavior is typical of a larger social body encompassing it. A microcosm can be seen as a special kind of epitome. Conversely, a macrocosm is a social body made of smaller compounds.

via Macrocosm and microcosm – Wikipedia, the free encyclopedia.

Polis – Wikipedia, the free encyclopedia

Derivatives of polis are common in many modern European languages. This is indicative of the influence of the polis-centred Hellenic world view. Derivative words in English include policy, polity, police and politics. In Greek, words deriving from polis include politēs and politismos, whose exact equivalents in Latin, Romance and other European languages, respectively civis (citizen), civilisatio (civilization) etc. are similarly derived.

A number of words end in the word “-polis”. Most refer to a special kind of city and/or state. Some examples are:

Other refer to part of a city or a group of cities, such as:

via Polis – Wikipedia, the free encyclopedia.

Writing contracts is like programming | Never Use This Font

Writing contracts feels a little bit like programming.

Writing contracts feels a little bit like programming.

There is an expected syntax and structure, there are certain key words that have special meaning (i.e. functions, keywords), and removing certain clauses make the entire contract invalid (i.e. runtime error). However, contracts are executed over a much longer timeline.

via Writing contracts is like programming | Never Use This Font.