Can you solve the secret assassin society riddle?
AdultsBooksCreativityEducation...Your agent has infiltrated a life or death poker game in a hidden back room of a grand casino.
The Figure 8 Knot Has Never Failed. Why?
AdultsConstructionEducationPhysics...Modern roped rock climbing, one of the nerdiest sports, relies almost entirely on a single type of knot for safety: the figure eight knot.
Can you solve the troll's paradox riddle?
AdultsCreativityMental HealthFun...You and your brother have discovered another realm and set off exploring the new wonderful world. Along the way, you see a troll catching creatures in an enormous net. The troll agrees to release the creatures if you can come up with a statement that is both truth and false. Can you come up with the correct sentence and force the troll to release them?
The coin flip conundrum - Po-Shen Loh
AdultsHistoryMathProblem-SolvingWhen you flip a coin to make a decision, there's an equal chance of getting heads and tails.
How to solve problems like a designer
AdultsCreativityDesignVisual Design...The design process for problem-solving, in 4 steps.
Can you solve the fish riddle? - Steve Wyborney
AdultsCreativityNatureProblem-SolvingAs the cargo director on the maiden voyage of the S.S. Buoyant, you've agreed to transport several tanks containing the last specimens of an endangered fish species to their new aquarium. Unfortunately, the boat is battered by a fierce storm, throwing your precious cargo overboard. Can you get the fish to safety and save the day? Steve Wyborney shows how.
Can you solve the pirate riddle? - Alex Gendler
AdultsMathPsychologyProblem-Solving...It's a good day to be a pirate. Amaro and his four mateys - Bart, Charlotte, Daniel, and Eliza have struck gold - a chest with 100 coins. But now, they must divvy up the booty according to the pirate code - and pirate code is notoriously complicated. Can you help come up with the distribution that Amaro should propose to make sure he lives to tell the tale? Alex Gendler shows how.
Can you solve the three gods riddle? - Alex Gendler
AdultsCreativityMathProblem-SolvingYou and your team have crash-landed on an ancient planet. Can you appease the three alien overlords who rule it and get your team safely home? Created by logician Raymond Smullyan, and popularized by his colleague George Boolos, this riddle has been called the hardest logic puzzle ever. Alex Gendler shows how to solve it.
Can you solve the counterfeit coin riddle?
AdultsCreativityMathProblem-SolvingYou're the realm's greatest mathematician, but ever since you criticized the Emperor's tax laws, you've been locked in the dungeon.
The Simple Solution to Traffic
AdultsCitiesTransportationSociety...The way we can make traffic disappear.
The Ingenious Design of the Aluminum Beverage Can
AdultsBusinessProductivityEngineering...Bill details the engineering choices underlying the design of a beverage can. He explains why it is cylindrical, outlines the manufacturing steps needed to created the can, notes why the can narrows near it lid, show close ups of the double-seam that hold the lid on, and details the complex operation of the tab that opens the can.
Beaker Ball Balance Problem
AdultsInternet CulturePhysicsMath...This problem has made the rounds on the internet but I felt it deserved a treatment like this.
How to Pack a Suitcase Efficiently
AdultsProductivityTravelHow-to...How to pack a suitcase. Top tips and life hacks to make packing a suitcase as quick and efficient as possible. Solve common travel problems and learn new packing solutions.
How to Cut Rope in an Emergency
AdultsCreativityInternet CultureSurvival...How to cut string or rope if you haven't got a knife or a pair of scissors. Great life hack trick to help you in an emergency. Cut rope with string!