HACKS VITAE SOURCES SHOWN

EVERY ARTICLE · SOURCES SHOWN

Library of Life Hacks

Popular advice, famous quotes and history, traced back to where they came from.

Articles
118
Sections
7
Points looked into
151
Words
215k

BACKGROUND · REMBRANDT, ARISTOTLE WITH A BUST OF HOMER, 1653 · THE MET, OPEN ACCESS

Newest first

All 118 articles. Prefer a list? Every article, by section →

PHILOSOPHY & MEANING · 8 MIN

Buddha Quotes, Checked: What the Early Texts Say and What They Don't

Several of the most shared "Buddha quotes" are not in the early Buddhist texts, including "The mind is everything". The "hot coal" image for anger comes from the Visuddhimagga, a Buddhist treatise written many centuries later, though the early texts do teach that anger harms the angry person first.

PHILOSOPHY & MEANING · 8 MIN

Existentialism, Checked: What Kierkegaard, Sartre and Camus Actually Wrote

Existentialism was never a school the famous names all joined. According to the Stanford Encyclopedia of Philosophy, of the major figures, only Sartre and Beauvoir explicitly called themselves existentialists; Camus denied it, and Kierkegaard died long before the word existed.

PHILOSOPHY & MEANING · 8 MIN

Diogenes and the Cynics: The Famous Stories, Checked

Almost everything we know about Diogenes comes from anecdotes written down centuries after he died, mostly by Diogenes Laertius. None of his own writings survive, if he wrote any.

HISTORY & WAR · 12 MIN

Mental Models from History: 12 Sayings Checked Against the Sources

Several famous stories are not in the sources the way they are told. Cortés wrote that he had his ships beached, not burned; Caesar's own account of the civil war does not mention the Rubicon; and the sword of Damocles is about the tyrant's fear, not Damocles's danger.

PHILOSOPHY & MEANING · 11 MIN

Mental Models from Philosophy: 11 Thinking Tools Checked Against the Texts

Several tools say less than their popular versions. Hume asked that "a reason should be given" for moving from is to ought; Popper allowed that one counter-example is never enough in practice; Aristotle's mean is "relative to us", and some things have no right amount.

MINDSET & DISCIPLINE · 7 MIN

Mindsets, Checked: 7 Popular Ideas and What the Research Actually Found

"Scarcity mindset" mixes two unrelated ideas: a self-help attitude from The 7 Habits of Highly Effective People and Mullainathan and Shafir's research on how shortage takes up attention. A 2021 re-run of 20 studies that cited their work found most effects smaller, and the scarcity researchers disputed that audit in 2023.

PHILOSOPHY & MEANING · 9 MIN

Where the Trolley Problem Comes From: 10 Claims, Checked

Philippa Foot wrote the version everything descends from in 1967, but it was a runaway tram, adapted from a pilot example, in a paper about abortion and the doctrine of double effect. The name "trolley problem" is Judith Jarvis Thomson's.

HISTORY & WAR · 10 MIN

The Aztec and Inca Empires: 9 Popular Claims, Checked

The Spanish did not conquer the Aztec Empire alone: about 900 Spaniards began the siege of Tenochtitlan in 1521, and Cortés's own letter puts tens of thousands of Indigenous warriors beside them. Smallpox had struck in 1520.

TOOLS & TECH · 7 MIN

AI Glossary: 22 Terms Explained in Plain Words

A plain-words glossary of 22 AI terms, most with a short quoted definition from a named source: Google's machine learning glossary, AI companies' own documentation, research papers or the Open Source Initiative.

MINDSET & DISCIPLINE · 4 MIN · 14 POINTS

Cognitive Biases, Checked: 14 Famous Findings and Whether They Held Up

Fourteen famous psychology findings, checked against the large projects that tried to repeat them. Two held up cleanly, seven are real but smaller or narrower than the famous version, four are genuinely disputed, and one has not been confirmed.

TOOLS & TECH · 6 MIN

What Is a Frontier AI Model? 8 Definitions That Don't Agree

There is no single definition of a "frontier" AI model. The eight definitions below turn on different things: how capable a model is, how dangerous it could be, how much computing power trained it, or a benchmark that is not published.

STORIES, FILM & CULTURE · 5 MIN · 14 POINTS

Real or Myth? 14 Popular Claims, Checked

Fourteen popular claims, checked one at a time. Nine are myths, three are partly true, one cannot be settled, and one holds up.

MINDSET & DISCIPLINE · 4 MIN · 12 POINTS

Real or Myth? Animal Mindsets and Shop Tricks, Checked

Twelve claims from motivational posts and shop folklore. Four animal lessons are myths, one is disputed, one is a line from a TV script, and one shop trick fully holds up.

MONEY, WORK & LEADERSHIP · 8 MIN

MOASS Meaning: Mother of All Short Squeezes

MOASS stands for “Mother Of All Short Squeezes”: a name for an extreme short squeeze. The phrase has been used for squeezes that happened; used about GameStop since 2021, it names one people expect, which is a forecast, and this page makes no prediction.

STORIES, FILM & CULTURE · 5 MIN

Toma Meaning

In Spanish and Portuguese, toma is a form of tomar: the command "take!" and "he/she takes". Tomar also means to eat or drink.

PHILOSOPHY & MEANING · 4 MIN

3 Mind Blowing Quotes by Alan Watts

All three lines can be traced to Watts's own work: two to books he wrote, one to a lecture recorded in 1971 and published after his death.

HISTORY & WAR · 9 MIN

Salahuddin Ayyubi: Righteousness of the Faith

Salah ad-Din means “righteousness of the faith”. It was an honorific title, not his personal name, which was Yusuf ibn Ayyub: Joseph, son of Job. Ayyubi means “of Ayyub”, and it gave his dynasty its name.

HISTORY & WAR · 7 MIN

Battle of Kerak: A Historic Saga of Valor and Strategy

Kerak was two sieges, not one battle, and Saladin withdrew from both: the first in late 1183, ending in early December, the second from late July, with the castle fully surrounded by mid-August, to early September 1184.

HISTORY & WAR · 9 MIN

A Leadership Masterclass: Lessons from Band of Brothers, Churchill and Reagan

On D-Day Dick Winters led a small group of paratroopers against a battery of four German guns near Brécourt Manor (about a dozen men in a 2014 US Army account, seven in his 1944 medal citation), won the Distinguished Service Cross, and ended the war a major commanding the 506th's 2nd Battalion.

STORIES, FILM & CULTURE · 6 MIN

FRIDAY THE 13TH ∙ Origins and Superstitions

Friday the 13th is about two hundred years old. The earliest clear references are two French texts from 1834; by the middle of the 19th century the belief was common in France, and references begin to show up regularly in American newspapers in the late 1880s.

PHILOSOPHY & MEANING · 6 MIN

Stoicism Life Hacks ∙ What is Stoicism? How can I be Stoic?

Stoicism was founded in Athens by Zeno of Citium around 300 BC and named after the painted porch where its first teachers met. The three voices most people read are Epictetus, once enslaved; Seneca, Nero's tutor and adviser; and Marcus Aurelius, an emperor writing for himself.