Norse sailors found the sun's bearing from sky polarization
Norse sailors found the sun's bearing on overcast days by reading sky polarization through a calcite sunstone.
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Casos publicados
3,236 CASOS PUBLICADOS · ATUALIZADOS REGULARMENTEVolkswagen turned a Stockholm subway staircase into a piano
Volkswagen and DDB Stockholm made a subway staircase play piano notes, and 66% more commuters chose it over the escalator.
Ler o casoWang Mazi livestreamed 21 hours of garlic smashing after rival's knife broke
When a rival's knife broke smashing garlic, Wang Mazi livestreamed 21 hours of garlic smashing, replacing any broken knife, and drew 450k viewers.
Ler o casoJinxing Stationery hid private ownership under a collective license
Jinxing Stationery Factory paid a township committee for a collective license, hiding private ownership until law caught up.
Ler o casoWikifarmer sold Greek farmers' market-rejected rice to weddings
Wikifarmer sold market-rejected rice to weddings, since throwing rice doesn't need to be edible-grade.
Ler o casoWingstop spun up Thighstop to dodge wing price spike
Wingstop, facing tripled wing prices, launched Thighstop, a delivery-only virtual brand using its abundant thigh meat, avoiding price hikes.
Ler o casoWrigley pivoted to gum after giveaways outsold his products
Wrigley noticed his free baking powder and gum outsold his soap and baking powder, so he pivoted the company to gum.
Ler o casoYahang brokers vouched for China's unknown buyers
Imperial China's yahang brokers solved trust by licensing wealthy locals to vouch for small buyers with their own capital.
Ler o casoMinsheng Shipping split the Yangtze route to beat the Japanese deadline
Minsheng Shipping's Lu Zuofu split the Yangtze route into three segments, matching vessels to their suited stretches, and moved a year's cargo in 40 days.
Ler o casoAlipay made Yu'e Bao instant by prefunding withdrawals itself
Alipay's Yu'e Bao paid users instantly from its own funds while the underlying T+2 fund settlement caught up, making a slow system feel instant.
Ler o casoYunnan Baiyao sold toothpaste on a secret no competitor could know
Yunnan Baiyao launched a toothpaste using its state-secret wound formula, giving it an uncopyable claim.
Ler o casoZappos paid trainees $2,000 to quit, proving who wanted to stay
Zappos offered new hires $2,000 to quit during training, so only those who truly wanted the job stayed.
Ler o casoZappos stopped timing call length and timed time on calls
Zappos's Customer Loyalty Team dropped average handle time and measured share of shift on calls, so agents stopped rushing callers.
Ler o casoZhang Heng's seismoscope detected distant quakes instantly
Zhang Heng built a seismoscope that dropped a ball toward a distant quake's epicenter, so the court knew where to send aid days before a rider arrived.
Ler o casoZhuge Liang's army moved supplies on single-wheel barrows
Zhuge Liang's army moved supply weight from porters' backs onto a single-wheeled barrow, tripling what one person could move through mountain passes.
Ler o casoZiploc revived expired coupons with a Ziploc-in-cart condition
Ziploc revived expired coupons, requiring a Ziploc in cart to redeem.
Ler o casoZuo Zongtang bought grain near the front to cut supply costs
Qing general Zuo Zongtang cut grain costs by buying from Russian frontier traders near Xinjiang instead of shipping from inner China.
Ler o casoAirbnb underwrote the nightmare so strangers would swap keys
Airbnb, after a host's home was ransacked, added a $1M host guarantee, ID checks, and double-blind reviews so strangers would trust each other.
Ler o casoAWS auctioned idle servers as Spot Instances
AWS auctioned idle compute as Spot Instances, letting interruptible workloads buy slack at fluctuating prices.
Ler o casoAmerican Airlines sold the same seat at five prices
American Airlines, bled by discounters, sold the same seat at five prices via restricted fares and yield management.
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