A wider world. A closer read.
People
Paul Swaddle on Westminster’s next chapterA recent podcast covers planning, partnerships, local funding and the pleasures of cooking.
International News
UN puts current-policy warming at 2.8°CThe new emissions report separates the present trajectory from what stronger action could achieve.
Sports
Kildunne starts on the benchEngland change four starters for their second match against Canada; Emma Sing takes the full-back shirt.
The Back Page
Dates to keep • practise a difficult call • the six-litre challengeYour action & deadline box
21–27 October. Today: Vinifera opens in Biel at 17:00. Thursday: choose Galerie 111’s Back Bone opening, the free poster-design discussion or English film at Tinguely. Friday: Anouchka Gwen at the Pavillon Le Corbusier. Saturday: Art & Wine at Kloster Fahr, local tastings or Sara Pascoe at the Volkshaus. Sunday: the ICRC application deadline; Hefti’s English tour and open studio; clocks go back, with the Austin race at 21:00 Zürich time. Event links and locations are in the calendars above.
Design idea: make two answers plausible
Original learning-design exercise. Give learners a short workplace case with two reasonable interpretations—for example, whether a performance problem calls for training or a change to the work itself. Ask what evidence would distinguish them before asking for a recommendation. Then reveal one new fact and invite a revision. Assess the quality of the questions and the explanation for changing course, as well as the final answer. German pair: das Urteil, the judgement; die Begründung, the reasoning or justification.
The six-litre challenge
Original puzzle • measuring and planning. You have an unmarked nine-litre jug, an unmarked four-litre jug, a tap and a drain. Both jugs start empty. Get exactly six litres in the larger jug.
One move means filling a jug completely, emptying it completely, or pouring into the other until the first is empty or the second is full. No estimating part-fills. Can you do it in eight moves? Bonus: explain why fewer cannot work.
For a different kind of test, play McLaren’s new James Hunt quiz, marking fifty years since his 1976 title. The jug challenge is original; the linked quiz is McLaren’s.
The Swaddle Daily · The Back PageDesk 12
Puzzle solution — open when ready
Eight moves. Amounts are (nine-litre jug, four-litre jug): fill 9 → (9,0); pour into 4 → (5,4); empty 4 → (5,0); pour into 4 → (1,4); empty 4 → (1,0); pour the remaining litre into 4 → (0,1); fill 9 → (9,1); top up 4 → (6,4). The last pour moves exactly three litres. For the bonus, enumerate the new reachable states after each move, discarding repeats: none has six litres in the large jug before move eight. A breadth-first search of all legal moves confirms the minimum.