A reference library that writes itself, one question at a time
Ask anything. Get the answer, footnotes included.
Type a question or paste a claim. FactsReef reads the open web, weighs what it finds and writes a verdict-first brief you can check line by line, usually in about ten seconds. Every brief becomes a permanent page in the library.
- Briefs in the library
- 27
- Subjects
- 12
- Typical wait
- About ten seconds
The best of the library
Chosen by how well each brief is sourced and researched, and how many people have read it.
SmartPostly website review: legit, but still young
SmartPostly looks like a real AI social-media tool, but its review history is still thin, so it is promising rather than proven.
Are polar bears dangerous?
Polar bears can be extremely dangerous to people, but serious encounters are rare and mostly happen in remote Arctic areas.
Coffee does not stunt growth
Coffee does not make kids shorter; genetics and nutrition matter far more, while caffeine’s real risks are sleep and appetite.
India is secular in law, but the reality is contested
India is constitutionally secular, but its secularism is often disputed in practice.
You do not lose most body heat through your head
You do not usually lose most body heat through your head; the head matters, but mostly when it’s exposed and the rest of you isn’t.
How many bones are in the human body?
Adults usually have 206 bones; babies start with far more, and the exact count can vary a little by how bones are counted.
Does reading in dim light damage your eyesight?
Reading in dim light usually causes temporary eye strain, not permanent eye damage, though children’s myopia risk is a separate question.
Most read this week
All by readers →- 1Sri Lanka is not explicitly a secular countryExplained1 read this week
- 2SmartPostly website review: legit, but still youngExplained1 read this week
- 3The Eiffel Tower is slightly taller in summerTrue1 read this week
- 4India is secular in law, but the reality is contestedMixed1 read this week
Just filed
All by date →- Malaysia is not a purely secular countryMixed7 sources
- Bhutan is partly secular, but Buddhism has special statusMixed6 sources
- Is Nepal a secular country?True5 sources
- Sri Lanka is not explicitly a secular countryExplained5 sources
- Is the Sahara the largest desert on Earth?False6 sources
How a brief gets written
Four steps, all of them visible while they happen. You watch the searches run and the sources land before the first sentence appears.
Read
The engine works out whether you asked a question or made a claim, and what would count as an answer.
Search
It runs several live web searches and favours primary sources: studies, statistics, filings, court and government records.
Weigh
Sources are compared and dated. Disagreements are reported, not smoothed over, and the strongest counter-case gets a hearing.
Write and file
You get a verdict, the reasoning and numbered footnotes. The brief gets a permanent address so nobody has to ask twice.
Browse by subject
Or by who and what the briefs are about: people, organizations, places and topics.
Science
Physics, biology, space and the scientific record.
Health
Medicine, nutrition, sleep, fitness and public health.
Technology
Software, devices, AI and how the internet works.
Money
Personal finance, markets, prices, tax and economics.
Business
Companies, products, work and industry.
Politics
Governments, elections, policy and law.
World
International affairs, places, borders and events.
History
What happened, when, and whether it really did.
Culture
Film, music, books, food, language and the arts.
Environment
Climate, energy, wildlife and the planet.
Sports
Records, rules, athletes and the games themselves.
Everyday life
Home, habits, old wives' tales and the questions we all ask.
Straight about what this is
Every brief here is written by software, from searches it ran the moment you asked. That is a strength (it is fast, tireless and shows its work) and a limit (it can misread a source or miss one). So each brief carries its date, its sources and a verdict scale that says how strong the evidence is. Read the footnotes. That is what they are for.
How verdicts and evidence strength work →The verdict scale
- TrueThe best available evidence supports the claim.
- Mostly trueAccurate in substance, with a caveat worth knowing.
- MixedPartly right, partly wrong, or it depends on what you mean.
- Mostly falseA kernel of truth wrapped in a misleading claim.
- FalseThe evidence contradicts the claim.
- UnverifiedThe record is too thin, or too contested, to call it.
- ExplainedA question rather than a claim, answered with sources.