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Start swiping — it's freeIn the Tao Te Ching, Laozi describes wu wei, or 'effortless action', as the highest way to live and govern: aligning with the natural flow of things rather than straining against them. Water is the classic example, wearing away rock not through force but through patient persistence. The idea has since influenced everything from Chinese statecraft to modern ideas about flow and non-coercive leadership.
In classic English peg solitaire, you start with every hole filled except the centre, and jump pegs over each other to remove them, aiming to finish with a single peg. You can finish with one peg, but never, starting from that setup, in the centre hole. Why is the centre provably unreachable?
A colouring argument, often attributed to mathematician John Conway, assigns pegs to classes based on position modulo 3 and shows each legal jump changes the count in a way that rules out ending on the centre from a centre-start. The game is first documented in a 1697 French engraving of the Princess de Soubise, and Gottfried Leibniz wrote about it in 1710.
— Wikipedia contributors, Peg solitaire — earliest reference 1697; Leibniz's account 1710
By 2008, Iceland's three largest banks held combined assets roughly ten times national GDP, after years of aggressive overseas expansion funded by foreign deposits. When global credit markets froze, all three collapsed within about a week — relative to its size, the largest banking collapse any country had suffered. Iceland let the banks fail rather than bail them out, and later prosecuted dozens of bankers.
— Standard economic accounts, 2008–2011 Icelandic financial crisis — Banks collapsed October 2008
On 6 December 1917, the French munitions ship Mont-Blanc collided with the Norwegian vessel Imo in Halifax Harbour, caught fire, and detonated roughly 2,900 tonnes of TNT-equivalent explosives. The blast flattened Halifax's Richmond district, killed around 1,800 people, and remained the largest artificial explosion on record until nuclear weapons tests began decades later.
— Laura M. MacDonald, Curse of the Narrows: The Halifax Explosion 1917 — Walker & Company, 2005
In 1770, Captain Cook's crew recorded the word 'kangaroo' from the Guugu Yimithirr language of far north Queensland, where 'gangurru' names a species of grey kangaroo. A popular legend claims the word actually meant 'I don't know', but fieldwork by linguist John Haviland in the 1970s confirmed the original meaning was exactly what everyone assumed, debunking decades of retellings.