# Educational

## The Wason Selection Task – Four Card Problem Interactive Video

You are shown a set of four cards. Each card has a number on one side, and a color on the other side. We would like to test the truth of the following statement. If a card shows an even number on one face, then its opposite face is blue.

Are you up for a real challenge? Find the flaw in this argument and let us know in the comments!

This hypothetical hotel has a countably infinite number of rooms, but they are all occupied. If someone is looking for a room, can the hotel accommodate him?

## Cool Math Facts #4

Learn another set of 5 cool math facts in a little over a minute from our new video!

This paradox Tuesday we try to find an answer to the question: “What happens when an unstoppable force meets an immovable object?”

## Why You Didn’t Die at Birth – Smarter Every Day 42 – YouTube

After living for 9 months in a liquid environment and then suddenly getting transported into the world by your mother, how do you think you made the transition? Find out from this great Smarter Every Day video.

## True or False – Pi Day Edition

You might know many digits of pi, but do you know everything about it? Test your knowledge in this interactive true or false game!

## Prisoner’s Dilemma – Paradox Tuesday Special

While the Prisoner’s Dilemma is not technically a paradox, it does involve a logical decision with an unexpected result.

## Football, Physics, and Symmetry

Symmetry is perfection, and this video shows exactly why with the help of Football and physics. Football, Physics, and Symmetry – YouTube.