Torx, 1967: the screw head that stopped cam-out once drivers could limit torque
Camcar Textron's six-lobed drive removed the Phillips screw's built-in slip — vertical sidewalls killed cam-out, and assembly lines followed.
Read the caseIngenious ideas that solved difficult problems. Explore what made them work.
The full archive, in the appCamcar Textron's six-lobed drive removed the Phillips screw's built-in slip — vertical sidewalls killed cam-out, and assembly lines followed.
Read the caseFive years after the 2017 unveil, Tesla's 500-mile semi went to work hauling Frito-Lay 425 miles, backed by four 750 kW chargers per depot.
Read the caseJohn Adams saw free bandwidth hiding in every TV signal's blanking interval; Ceefax and Oracle rode it, then merged formats into the world teletext standard.
Read the caseTaiwan paired ID-card purchase limits with open inventory data; volunteer maps routed buyers while output ramped from 7 to 13 million masks a day.
Read the caseA seed company turned South America's later season into an option: an optimizer sizes the extra planting after US yield risk resolves.
Read the caseIndia broadcast the syllabus instead of waiting for rural broadband: 32 DTH channels from 2016, each day's content replayed six times, free on any dish.
Read the caseTanzania split its first gas chain — field, pipeline, plant in separate hands, transport priced transparently — and cut Ubungo's power cost to $0.064/kWh.
Read the caseA Dutch rehab hospital replaced manual group-therapy timetables with an optimized tactical blueprint that governs daily appointment booking.
Read the caseSEBI converted the world's fifth-largest equity market to next-day settlement cohort by cohort — then to same-day — without waiting for anyone else.
Read the caseTwelve utilities swapped bilateral contracts for a loose power pool: shared data, emergency-energy duties, and capacity you can meet by contracting a neighbor.
Read the caseSabre's pairing optimizer makes crew augmentation a decision variable instead of a fixed input, cutting long-haul crew costs.
Read the caseRwanda paid hillside farmers to terrace, then consolidated plots around one crop per site — yields rose up to 8-fold and commercialization hit 80%.
Read the caseJapan's 1979 contest chose Yukio Ota's green running man; the most thoroughly tested sign beat a Soviet rival to become the world's exit symbol.
Read the caseThe champon chain’s machinery arm turned factory pain — overfilled dumplings, misprinted packs — into Deama, an AI inspector it now sells to other food makers
Read the caseThe virus hid in coverage gaps. India vaccinated every under-five on the same days, caught movers at transit hubs, and let mosques do the persuading.
Read the caseWhile India's power reform fought over generation and distribution, transmission got its own company — and grew to carry a third of national power capacity.
Read the caseFree farm power drained aquifers and discoms alike. KUSUM let farmers sell surplus solar back to the grid, so saving power became income.
Read the caseProduce PLU codes: four random digits plus an attribute prefix, so any register worldwide rings any banana — the code that made self-checkout work.
Read the caseThe PBOC cannot buy equities, so it lent its own balance-sheet quality: brokers and funds pledged shares and ETFs for treasuries they could fund against.
Read the caseMalaysia's organ donation rate is among the world's lowest, so NTRC asked for pledges where Muslims already give: Ramadan's zakat counters, endorsed by muftis.
Read the case