The origin of countless conspiracy theories - PatrickJMT

2,248,294 views ・ 2016-05-19

TED-Ed


Please double-click on the English subtitles below to play the video.

00:06
If you line up the entire text of “Moby Dick,”
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which was published in 1851,
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into a giant rectangle,
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you may notice some peculiar patterns:
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like these words,
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which seem to predict the assassination of Martin Luther King.
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Or these references to the 1997 death of Princess Di.
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So, was Herman Melville a secret prophet?
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The answer is no,
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and we know that thanks to a mathematical principle called Ramsey theory.
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It's the reason we can find geometric shapes in the night sky,
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it's why we can know without checking
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that at least two people in London
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have exactly the same number of hairs on their head,
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and it explains why patterns can be found in just about any text...
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even Vanilla Ice lyrics.
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So what is Ramsey theory?
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Simply put, it states that given enough elements in a set or structure,
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some particular interesting pattern among them is guaranteed to emerge.
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As a simple example, let’s look at what’s called the Party Problem—
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a classic illustration of Ramsey theory.
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Suppose there are at least six people at a party.
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Amazingly enough, we can say for sure
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that some group of three of them either all know each other,
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or have never met before,
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without knowing a single thing about them.
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We can demonstrate that by graphing out all the possibilities.
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Each point represents a person,
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and a line indicates that the pair know each other.
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Every pair only has two possibilities: they either know each other or they don't.
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There are a lot of possibilities,
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but every single one has the property that we're looking for.
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Six is the lowest number of guests where that's guaranteed to be the case,
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which we can express like this.
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Ramsey theory gives us a guarantee
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that such a minimum number exists for certain patterns,
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but no easy way to find it.
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In this case, as the total number of guests grows higher,
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the combinations get out of control.
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For instance, say you're trying to find out the minimum size of a party
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where there's a group of five people who all know each other or all don't.
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Despite five being a small number,
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the answer is virtually impossible to discover
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through an exhaustive search like this.
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That's because of the sheer volume of possibilities.
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A party with 48 guests
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has 2^(1128) possible configurations,
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more than the number of atoms in the universe.
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Even with the help of computers,
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the best we know is that the answer to this question
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is somewhere between 43 and 49 guests.
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What this shows us is that specific patterns
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with seemingly astronomical odds
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can emerge from a relatively small set.
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And with a very large set, the possibilities are almost endless.
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Any four stars where no three lie in a straight line
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will form some quadrilateral shape.
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Expand that to the thousands of stars we can see in the sky,
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and it's no surprise that we can find all sorts of familiar shapes,
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and even creatures if we look for them.
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So what are the chances of a text concealing a prophecy?
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Well, when you factor in the number of letters,
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the variety of possible related words,
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and all their abbreviations and alternate spellings,
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they're pretty high.
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You can try it yourself.
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Just pick a favorite text,
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arrange the letters in a grid,
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and see what you can find.
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03:40
The mathematician T.S. Motzkin once remarked that,
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“while disorder is more probable in general,
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complete disorder is impossible."
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The sheer size of the universe guarantees that some of its random elements
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will fall into specific arrangements,
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and because we evolved to notice patterns and pick out signals among the noise,
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we are often tempted to find intentional meaning where there may not be any.
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So while we may be awed by hidden messages in everything from books,
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to pieces of toast,
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to the night sky,
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their real origin is usually our own minds.
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