Food, health, money, business and general knowledge worth having.
General knowledge is a slightly unfair name for the most practical section on the site.
It covers food and drink, health and fitness, money and economics, business and the brands that surround us, learning itself, and a general-knowledge category that goes wherever it likes. These are the questions where being wrong is genuinely useful, because the subjects come up constantly in ordinary life and the explanations tend to correct something you half-believed.
If you only have five minutes and no particular topic in mind, start here.
Ingredients, dishes and where they actually come from.
A little of everything, from the everyday to the delightfully obscure.
Logos, slogans and how persuasion is packaged.
How companies are built, funded and run.
Currencies, markets and the terms used in every headline.
How teaching works and how learning actually sticks.
Exercise, nutrition and rest, without the marketing.
Why the sky is blue, why ice floats, and other things everyone has heard explained once.
Why does the sky appear blue?
Salting, smoking, canning and freezing — and why each of them works.
Salting preserves food principally by doing what?
Where our units came from, and the arbitrary decisions still built into them.
The metre was originally defined as a fraction of what?
The first of various things, and the people who usually get the credit instead.
The first successful vaccine was developed against which disease?
Bone, cartilage, heat and balance — how the structures of the body respond to being used.
Wolff's law describes what?
Fibre types, lactate, motor units and what actually happens inside a working muscle.
Skeletal muscle fibres are conventionally divided into which two broad types?
Scaffolding, mastery, phonics and the arguments that decided how classrooms are run.
Bloom's taxonomy classifies what?
Selection, apprenticeships, entrance exams and how differently countries organise schooling.
The word kindergarten was coined in which country?
A banknote is a piece of paper nobody can eat, wear or burn for heat, and someone will still hand you dinner for it. Here's…
Read article 10 min readA logo isn't a picture of the business — it's a handle. The rules that make one work were mostly settled by medieval heralds…
Read article 10 min readNine out of ten startups don't fail — that figure has no study underneath it. The real survival data is duller and stranger, and…
Read article28 published quizzes across 7 topics, 280 questions in total. Every one is researched, written and checked by hand.
The mix here is 7 easy, 17 medium and 4 hard. Difficulty is about how obscure the answers are, not how fast you have to be — there is no timer on any quiz.
About 7 minutes on average, ranging from 6 to 8. Playing every quiz in this section would take roughly 3 hours.
No. Every quiz is free and playable straight away. An optional free account only saves your scores across devices.
Yes — every question has a short explanation of why the right answer is right, shown the moment you answer, whether you got it or not.