background preloader

List of paradoxes

List of paradoxes
This is a list of paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. Because of varying definitions of the term paradox, some of the following are not considered to be paradoxes by everyone. This list collects only scenarios that have been called a paradox by at least one source and have their own article. Although considered paradoxes, some of these are based on fallacious reasoning, or incomplete/faulty analysis. Informally, the term is often used to describe a counter-intuitive result. Logic[edit] Self-reference[edit] These paradoxes have in common a contradiction arising from self-reference. Barber paradox: A barber (who is a man) shaves all and only those men who do not shave themselves. Vagueness[edit] Ship of Theseus (a.k.a. Mathematics[edit] Statistics[edit] Probability[edit] Infinity and infinitesimals[edit] Geometry and topology[edit]

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

Related:  mes pagesGames & Puzzlesjimm2Reading and ThinkingEthno

The Coming Race from Project Gutenberg Project Gutenberg Presents Project Gutenberg Release #1951Select author names above for additional information and titles Download the ebook in a format below. Additional formats may also be available from the main Gutenberg site. Test Your Brain With Brain Teasers and Games Here you can enjoy the Top 25 Brain Teasers, Games & Illusions that SharpBrains readers (primarily adults, but some younger minds too) have enjoyed the most. It is always good to learn more about our brains and to exercise them!. Fun experiments on how our brains and minds work Living in the Divided World of the Internet’s Future « Utopia or Dystopia Sony hacks, barbarians with FaceBook pages, troll armies, ministries of “truth”- it wasn’t supposed to be like this. When the early pioneers of what we now call the Internet freed the network from the US military they were hoping for a network of mutual trust and sharing- a network like the scientific communities in which they worked where minds were brought into communion from every corner of the world. It didn’t take long for some of the witnesses to the global Internet’s birth to see in it the beginnings of a global civilization, the unification, at last, of all of humanity under one roof brought together in dialogue by the miracle of a network that seemed to eliminate the parochialism of space and time. Anyone who doubts the Internet has become as much a theater of war in which political conflicts are fought as much as it is a harbinger of a nascent “global mind” isn’t reading the news. Much of the Internet has been weaponized whether by nation-states or non-state actors. Like this:

Problem Reversal From Mycoted From What a Great Idea by Charles Thompson. The world is full of opposites. Of course, any attribute, concept or idea is meaningless without its opposite. Lao-tzu wrote Tao-te Ching which stresses the need for the successful leader to see opposites all around: Yuktibhāṣā Contents[edit] Mathematics[edit] As per the old Indian tradition of starting off new chapters with elementary content, the first four chapters of the Yuktibhasa contain elementary mathematics, such as division, proof of Pythagorean theorem, square root determination, etc.[8] The radical ideas are not discussed until the sixth chapter on circumference of a circle. Yuktibhasa contains the derivation and proof of the power series for inverse tangent, discovered by Madhava.[2] In the text, Jyesthadeva describes Madhava's series in the following manner: This yields

30 Questions Guaranteed to Make You Think Instead of giving you information that you want, I’m going to teach you something today by being indirect. Here’s the lesson: everything you need, every revelation I’ve had, and everything that I could possibly write about on this blog, ca n be found inside yourself.

Why the Global Brain needs a Therapist « Utopia or Dystopia The idea that the world itself could be considered an overarching form of mind can trace its roots deep into the religious longings of pantheism- the idea that the universe itself is God, or the closest thing we will ever find to our conception of God. In large part, I find pantheists to be a noble group. Any club that might count as its members a philosophical giant like Spinoza, a paradigm shattering genius such as Einstein, or a songbird like Whitman I would be honored to belong to myself.

Ideal Final Result From Mycoted Ideal Final Result (IFR) is an description of the best possible solution for the problem situation (or contradiction), regardless of the resources or constraints of the original problem. IFR is one of the basics terms in TRIZ, a problem solving methodology. Well defined IFR helps problem solver to overcome psychological inertia and reach breakthrough solutions by thinking about the solution in terms of functions, not the intervening problems or needed resources. It focuses on functions needed, not the current process or equipment. The idea of formulating the IFR is to clearly define the goal of improvement and eliminate rework (solve the right problem from the same beginning!).

Squircle There are two incompatible definitions of the squircle. The first defines the squircle as the quartic plane curve which is special case of the superellipse with and , namely illustrated above. This curve as arc length The Superplexus This is the three-dimensional spherical labyrinth that challenges the limits of your manual dexterity and spatial understanding as you maneuver a 5/8" wooden marble through its entire course. The Superplexus is a complex network of chicanes, multi-planar hairpin turns, spirals, and staircases--even a vortex. Hand made from 3- and 6-ply Finnish birch that form the track, over 400 hours are involved in its construction. The labyrinth is set inside a 36" diameter acrylic sphere affixed to a Jatoba base using a stainless steel gimbaled mount that allows you to tilt the sphere in any direction to guide the marble. The entire track laid out on a straight line is 31' longer than a football field. In addition to the track, the ball must travel on a 1/16" diameter stainless steel wire pathway at eight points along the journey.

10 Most Brilliant Social Psychology Experiments Ten of the most influential social psychology experiments. “I have been primarily interested in how and why ordinary people do unusual things, things that seem alien to their natures.Why do good people sometimes act evil?Why do smart people sometimes do dumb or irrational things?” –Philip Zimbardo

Related:  PhilosophyLogiqueIdeas