Economy
Discover facts about economy. Small discoveries that change the way you see familiar things.
Economy

Britain enforced India's salt tax with a giant hedge
The colonial Inland Customs Line stretched roughly 2,500 miles, with long sections reinforced by thorny vegetation. Guards searched for salt carried across…
Discover more
Dictating fuel access by license plate numbers
The rule spread demand across designated days but didn’t put more gas in the pumps. Drivers still formed long lines when their assigned day came around.
Discover more
A vending machine can identify a coin by its electrical fingerprint
Electronic validators use inductive sensors to measure how a passing coin affects an electromagnetic field. Material and dimensions produce a pattern the…
Discover more
The IRS can know your wages before you file
US employers send wage information to the tax agency as well as to workers. Filing still asks the taxpayer to assemble a return, including details the agency…
Discover more
Medieval tenants could pay rent in cheese
Rochester Cathedral's records from around 1235 include holdings where cheese was the rent owed to the monks. Food payments connected agricultural production…
Discover more
Why surprise boxes are full of unsold stock
A surprise box can be a seller’s way to clear stock that hasn’t sold. The buyer gets a random assortment, including items they might never have chosen.
Discover moreA bigger world.
One discovery
at a time.
Keep discovering with Stacky. Interesting facts in an app that is always within reach.

Employers can insure against staff winning the lottery
Some business policies cover disruption when employees win a large lottery prize and leave. The problem is especially obvious with an office syndicate:…
Discover more
Your card number contains a small defense against typos
Many payment-card numbers include a check digit calculated from the other digits using the Luhn algorithm. A mistyped number will often fail that arithmetic…
Discover more
Why stock tickers use such short codes
A short stock code spared nineteenth-century telegraph operators from typing a company's full name over and over. Finance kept the shorthand even after the…
Discover more
Charging exorbitant fees for a folded piece of paper
The buyer is paying for a ready-made message and the feeling that a present should come with one. That can turn a single sheet of cardstock with a generic…
Discover more
Guilting customers into paying staff wages
The menu price doesn’t cover the whole wage story: some businesses rely on diners’ tips to supplement staff pay. Then the bill hands customers the awkward job…
Discover more
Why GDP can rise after a hurricane
Emergency crews and rebuilding projects spend money after a storm, and GDP counts that spending as economic activity. It doesn’t subtract the destruction or…
Discover more
Grinding away in the glorious gig hustle
A courier can cross town with someone else’s burrito for pennies and still be told to think like an entrepreneur. The work is called independent; the pay for…
Discover more
Enduring miserable timeshare presentations
Some people endure three hours of a timeshare sales pitch for one small prize: a free T-shirt. The company gets a captive audience; the visitor gets a shirt…
Discover more
Why people traded necklaces they couldn't use
The necklaces and armbands weren’t useful as tools or clothes; their value came from what other people would trade for them. That made them worth carrying…
Discover more
When the rich proved status by destroying their wealth
Some people proved their wealth by making valuable possessions disappear in front of an audience. They gave prized things away or destroyed them, turning a…
Discover more
Germany made emergency coins out of porcelain
Wartime metal shortages encouraged experiments with ceramic money, including issues produced by porcelain factories. Meissen later made well-known examples…
Discover more
A Philippine banknote misspelled its own president's name
A batch of 100-peso notes printed in 2005 rendered Gloria Macapagal Arroyo's surname as 'Arrovo.' The error appeared in an object designed to project official…
Discover more
Why vending machines drop your snacks
In many snack machines, a motor turns a metal spiral just far enough to release the front item. Gravity handles the trip to the collection tray. The familiar…
Discover more
Why winning an auction can mean overpaying
Everyone else stopped bidding, but that doesn’t mean the winner got a bargain. With an uncertain-value item, the highest bid may belong to the most…
Discover more
How MLMs use products to avoid pyramid-scheme laws
A physical product gives an MLM something to sell on paper, even if distributors end up with boxes of unsold stock in their garages. The product can make the…
Discover more
Bureaucracies approve paperwork for high fives
The patent does not just describe a machine for a novelty greeting; it gives its holder exclusive commercial rights to an apparatus designed solely to deliver…
Discover more
Robbing Peter to pay Paul until Peter finally runs dry
The early investors get paid with money from the next investors, not with profits from a business. The scheme looks successful only while new people keep…
Discover more
A Washington town printed money on wood
When Tenino's bank closed in 1931, local organizers issued emergency currency to keep trade moving. The newspaper's press printed some certificates on thin…
Discover more