# Fredkin's Paradox Explains Why You Waste Time On Meaningless Decisions

Ever notice that you spend a full 15 minutes agonizing about whether to have apple-cinnamon pancakes or banana-walnut pancakes in the morning? Ever had that decision affect your day in any way? Fredkin's Paradox explains why you agonize anyway.

# Why You Can’t Travel Back in Time and Kill Hitler

You've gotten your hands on a shiny new time machine, and you decide that your first order of business is to travel back in time and kill Hitler. But killing Hitler and preventing the Holocaust isn't quite as simple as it sounds. Here's why.

# How Labyrinth illuminates an ancient Greek paradox

Labyrinth gave us many things. David Bowie in tights. A CGI owl. And, of course, a variation on a paradox that started in ancient Greece. Learn about the iterations of the Liar's Paradox.

# What's In a Number: Unravelling a Multiversal Paradox

"Since there is an infinite number of alternative universes, there must be one in which there isn't an infinite number of alternative universes. Perhaps this is the one."

# Delightfully weird Banach-Tarski video will make you wish you were a bigger math geek

An oversimplified explanation of the mind-numbingly paradoxical Banach-Tarski theorem states that a solid sphere can be cut into non-overlapping pieces (geometricians would say that such a ball has been "decomposed"), and reassembled in a new arrangement, such that the end result is two identical copies of the…

# Parrondo's Paradox: Winning Two Games You're Guaranteed to Lose

JM Parrondo is a casino and con artist's worst nightmare. In the 1990s, he invented two games that are sure to lose you everything. They're both mathematically designed to make you go broke, but play them one after another and you are guaranteed to win.

# This logic puzzle will make your brain hate you

How's your Monday coming along? Pretty rough? Well it's about to get a little hairier. If I'm not mistaken, this self-referential brain teaser is a play on the age-old Liar's paradox, (or, for those of you familiar with set theory, Russell's paradox), reframed in the form of a multiple-choice question.

How many people need to be crowded into a room before two of them are likely to have the same birthday? The answer is a mere 23 to have a fifty-fifty shot. To bring the probability to ninety-nine percent, you need a crowd of only fifty-seven people. And yet there are three hundred and sixty-five days in a year. What's…

# How the Large Hadron Collider could create time-travelling Higgs particles

A crucial goal for the Large Hadron Collider is to find the long-sought Higgs boson. It might also create another Higgs particle that only travels through hidden dimensions, meaning it can pop in and out of any point in time.

# Physicists reveal how the universe guarantees paradox-free time travel

Time travel isn't just science fiction: Albert Einstein's general relativity suggests it could exist. And now we might have solved the tricky matter of time paradoxes. It's all just a question of adjusting probabilities.

# The BBC's Version Of FlashForward Is Part Cop Drama, Part Temporal Paradox

Once you glimpse the future, can you change it? That's the question asked by the BBC's new miniseries Paradox, about a scientist and a detective who team up to prevent a major catastrophe, using clues sent from the future.

# Seven Things Your Future Self Can Teach You

When you travel through time and space, you're bound to run into yourself occasionally. These meetings can be awkward, embarrassing, or lead to uncontrollable fainting, but there are some things your future self can teach you better than anyone else.

# Crimes Yet To Happen In A Show That Already Has

If you've always thought "I wish that someone would make a television show out've Minority Report, only with soap stars replacing Tom Cruise," then you may just be interested in new BBC series Paradox.

# Why You Can’t Travel Back in Time and Kill Hitler

Next month sees the release of , a film about Claus von Stauffenberg, the man who tried to assassinate Adolph Hitler. Plenty of time travelers have had the same idea, although their plan was to kill Hitler before he enacted mass genocide. Their intentions may be noble, but the plans always seem to go…