Archive for the ‘logic’ Category

The Tetralemma and Semiotic Square

January 28, 2011

The Tetralemma is a list that is supposed to exhaust all logical possibilities. Something is either X, or not X, or both X and not X, or neither X nor not X. Nagarjuna’s Fourfold Negation expresses a paradox by negating the Tetralemma, and asking what is not X, nor not X, nor both X and not X, nor neither X nor not X.

The Semiotic Square is an analytical tool to explore relationships between two semiotic signs, usually considered opposites of each other. The S1 and S2 in the figure are the signs in opposition, so that S2 is the dual of S1. S1+~S2 (S1 and not S2) would be X, ~S1+S2 would be not X, S1+S2 would be both X and not X, and ~S1+~S2 would be neither X nor not X.

References:

http://en.wikipedia.org/wiki/Tetralemma

http://en.wikipedia.org/wiki/Semiotic_square

[*4.84, *5.182]

<>

Introduction

July 16, 2010

“Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. That is alchemy’s first law of Equivalent Exchange. In those days, we really believed that to be the world’s one, and only truth.”

Alphonse Elric, in the first opening to Fullmetal Alchemist

The concept of Equivalent Exchange introduced in the anime quoted above inspired the title of this blog. “To obtain, something of equal value must be lost.” Though this term was recently coined, the concept is a familiar one and has been around for a long time. It is found as guides, rules, and laws in philosophy, religion, and science. For example:

  • Do unto others as you would have them do unto you.
  • Don’t take more than you give.
  • Give and you shall receive.
  • What goes around comes around.
  • There’s no such thing as a free lunch.
  • You get what you pay for.
  • You get what you deserve.
  • An eye for an eye, a tooth for a tooth.
  • You scratch my back, and I’ll scratch yours.
  • Energy is neither created nor destroyed.
  • Every action has an equal and opposite reaction.
  • Yin and yang.
  • Karma.

I’m sure many more can be listed. I invite my readers to submit them.

These are all conservation laws: total value is maintained, even while it changes hands. And they certainly seem to be “conservative”:  all things being equal, they usually hold.

That being said, this blog isn’t specifically about “equivalent exchange”, except for hopefully obtaining the value of knowledge for the effort expended. Instead, I hope to explore a common thread that runs through philosophy, logic, and semiotics in the form of “double duals” (which themselves seem to have the property of equivalent exchange), with the goal of understanding and classifying different philosophical subjects and systems, exploring the nature of pluralism, and enhancing dialogue between opposing viewpoints. The image of the Tower of Babel in the title banner was chosen because public discourse has become fragmented and even broken.


  Bartosz Milewski's Programming Cafe

Category Theory, Haskell, Concurrency, C++

The Inquisitive Biologist

Reviewing fascinating science books since 2017

Paleofuture

Every Fourth Thing

Simplicity

Derek Wise's blog: Mathematics, Physics, Computing and other fun stuff.

COMPLEMENTARY 4x

integrating 4 binary opposites in life, learning, art, science and architecture

INTEGRATED 4x

integrating 4 binary opposites in life, learning, art, science and architecture

Playful Bookbinding and Paper Works

Chasing the Paper Rabbit

Antinomia Imediata

experiments in a reaction from the left

Digital Minds

A blog about computers, evolution, complexity, cells, intelligence, brains, and minds.

Social Systems Theory

A blog inspired by Niklas Luhmann and other social theorists

philosophy maps

mind maps, infographics, and expositions

hyde and rugg

neat ideas from unusual places

John Kutensky

The way you think it is may not be the way it is at all.

Visions of Four Notions

Introduction to a Quadralectic Epistomology

Explaining Science

Astronomy, space and space travel for the non scientist

Log24

Every Fourth Thing

Ideas Without End

A Serious Look at Trivial Things

Quadralectic Architecture

A Survey of Tetradic Testimonials in Architecture

Minds and Brains

Musings from a Naturalist

Quadriformisratio

Four-fold thinking4you

Multisense Realism

Craig Weinberg's Cosmology of Sense

RABUJOI - An Anime Blog

Purveyors of Fine Anime Reviews and Ratings Since 2010

Intra-Being

Between Subject and Object

The Woodring Monitor

Every Fourth Thing

FORM & FORMALISM

Every Fourth Thing

Log24

Every Fourth Thing

The n-Category Café

Every Fourth Thing

ECOLOGY WITHOUT NATURE

Every Fourth Thing

PHILOSOPHY IN A TIME OF ERROR

Sometimes those Sticking their Heads in the Sand are Looking for Something Deep

Networkologies

Online Home of Christopher Vitale, Associate Professor of Media Studies, The Graduate Program in Media Studies, Pratt Institute, Brooklyn, NY.

DEONTOLOGISTICS

Researching the Demands of Thought

Aberrant Monism

Spinozism and Life in the Chaosmos

Object-Oriented Philosophy

"The centaur of classical metaphysics shall be mated with the cheetah of actor-network theory."

Objects & Things

objects & things, design, art & technology

%d bloggers like this: