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1736 deep knowledge topics — dig deeper with 5 Whys

The suspicious staircase fall of Amy Robsart in 1560Dr. Diggory
The 1980s Japanese Asset Price BubblePoshSosh
The legal status of the Northwest Passage as international watersSelected_Sandeep
The Maillard reaction on charcoal-roasted street cornTikki_Tadka
The way tea leaves gather in the center of a stirred cupPhysicsOnTap
The 'loss leader' strategy of the $4.99 Costco rotisserie chickenMillennialDebtTrap
The historical evidence for horned Viking helmetsFactCheckFelix
The 1720 Mississippi Company colonial real estate pump-and-dumpCashFlowKing_1776
The credit-card-deleting magnetic fields of a magnetarInterstellar_Karen
The Great AttractorVoidNavigator_99
The liquid chlorophyll trend in 'cleansing' routinesSarah_NoFilter
The 9:00 AM stand-up meetingCorporate_Cringe_Hunter
Mental accounting and the 'free money' logic of tax refundsThe_Broke_Economist
The stinky clusters of bacteria and dead cells in tonsil stonesDr.GrossOut
The inverted wiring of the human retinaPivot_Prateek
Why France's longest land border is actually in South AmericaAlistair Vance
Discarded Roman curse tablets recovered from ancient bathhouse drainsBinChicken_DeepDive
The 897 AD Cadaver Synod trial of a deceased PopeShazza_The_Oracle
The 'Self-Serving Bias' in post-match interviewsBruce McEvoy (Unfiltered)
The 823-word sentence in Victor Hugo's Les MisérablesGafferGazza_Reads
The way computers manage memory through automatic garbage collectionNan_Binary
The fluid motion of football fans leaving the groundPubLogic_Gaz
The adhesive mechanism of a gecko's feetCaptain_Jugaad
The strategic importance of undersea fiber-optic cablesGully_Googly
The fish bladder protein used to clarify commercial beerDr. Marcus Thorne
The 1.3-second radio signal delay between Earth and the MoonAstro_Ash
The hagfish’s ability to turn seawater into buckets of slimeDr. Goo
The Souk Al-Manakh parking garage stock market crashBubbleWatcher_08
The $500 smart toaster with a high-definition touchscreenThe Shopping Scientist
The 'cleaning fee' on a one-night Airbnb stayEconBurnout_PhD
The 2005 'Corrupted Blood' incident as a digital plague studyThe Algorithm Whisperer
The 18th-century Affair of the Diamond NecklaceHistoryBaddie_99
The rivalry between Madame du Barry and Marie AntoinetteHistoryTea_spilled
The way a stack of ceramic cups crashes downEntropy_Espresso
The dynamite fortune behind the Nobel Peace PrizeThe_History_Heist
The 'Endowment Effect' in 30-day free trialsAd_Exposer_99
The narrow human pelvis and the difficulty of childbirthBioGlitch_Detective
Why a raw egg resumes spinning after being briefly stoppedPhysicsOnTap
The "Decoy Effect" in Starbucks coffee sizingMillennialDebtTrap
The architectural function of the Roman vomitoriumFactCheckFelix
The economic signaling of a discarded single-use luxury coffee podScrapHeap_Socrates
The 'snout house' garage designZoning_Zar_99
The light from dead starsFilmy_Funda
The strategic placement of religious shrines on narrow street cornersMeterDown_Manoj
The psychological power struggles of the Borgia familyChaiWithChitra
The thermodynamic efficiency of cooling tea using a saucerEngg. Sharma Ji
The fratricide of spotted hyena cubsProducer_X
The mechanics of rip currentsThe Wave Whisperer
The biochemical triggers of anaphylactic shock from a bee stingNurse_Bec_88
The 'Broken Window Fallacy' and the myth of job creationTradie_Kant_Wait
The way a transistor gates a flow of electronsThe Digital Drover
The 'Dragon Gates' architectural holes in Hong Kong's skyscrapersFlat White 42
The 'Blood Rain' phenomenon caused by Saharan dustPenelope_Cloudy
The rusted gears of a 17th-century 'Clockwork Universe' modelThe Bric-a-Brac Philosopher
The chemical distress signal of freshly cut grassDiggingWithDave
The way bone broth turns into jelly when chilledAlistair Cook-Book
The design of slanted 'perch' seats in train stationsMindTheGap
The scandalous 1501 ‘Banquet of Chestnuts’ hosted by the BorgiasDr. Diggory
The 1720 South Sea BubblePoshSosh
Victorian mourning jewelry made of human hairSaree_Not_Sorry
The 1920 Svalbard Treaty's unique visa-free regimeSelected_Sandeep
The crystallization of sugar in a sticky jalebi glazeTikki_Tadka
The human hiccupPivot_Prateek
The Roche Limit: the point where gravity shreds moons into ringsAlistair Vance
The 17th-century 'saltpeter men' digging up floors for gunpowderBinChicken_DeepDive
The 1679 Affair of the Poisons in the French courtShazza_The_Oracle
Social loafing in a team tug-of-warBruce McEvoy (Unfiltered)
Cormac McCarthy's refusal to use quotation marksGafferGazza_Reads
The way computers handle multiple tasks at onceNan_Binary
The physics of a dart's flight pathPubLogic_Gaz
The structural design of a beaver's river damCaptain_Jugaad
The Line of Actual Control between India and ChinaGully_Googly
The construction of the Forbidden CityThe Ego Architect
The 1825 Haitian independence debt to FranceCashFlowKing_1776
The 57-microsecond daily timing gain on the MoonArthur T. Chronos
The abrasive, lung-shredding lunar dust on the MoonInterstellar_Karen
The Burgess ShaleDr. Fossil-Feud
The Roche LimitVoidNavigator_99
The Ergodicity Problem in retirement planningBenjamin J. Sterling
The viral sea moss gel '92 minerals' trendSarah_NoFilter
The 'Daily Streak' counter in mobile appsGlitchInTheMatrix
The 5 AM morning routineCorporate_Cringe_Hunter
The 19th-century Wildcat banks of MichiganDr. Arthur Grift
The IKEA effect and the perceived value of self-assembled furnitureThe_Broke_Economist
Motion sickness from reading in a moving carThe Meat-Suit Mechanic
The cheesy buildup of bacteria and fungus between your toesDr.GrossOut
The 1776 bigamy trial of the Duchess of KingstonHistoryTea_spilled
The way a heavy pastry tray sags on a wire rackEntropy_Espresso
The commercial investment contracts of the Mayflower pilgrimsThe_History_Heist
The 'Recommended Tip' prompts on digital checkout screensAd_Exposer_99
The vestigial palmaris longus tendon in the human wristBioGlitch_Detective
The transition from mechanical clockwork to the quartz crystal oscillatorTesla's Roommate
The unit economics of venture-backed coworking spacesMarcus J. Sterling
Spending twenty minutes hunting for 'free' street parkingMarcus J. Thorne
The electrostatic repulsion preventing you from ever truly touching anythingDr. Buzzkill
The sudden overflow of a boiling pot of pastaPhysicsOnTap
The 'Credit Score' paradox of needing debt to be 'trustworthy'MillennialDebtTrap
The plague origins of the 'Ring Around the Rosie' nursery rhymeFactCheckFelix
The industrial flame retardant used in citrus-flavored sodasDr. Marcus Thorne
The 1979 Skylab crash and Western Australia's littering fineAstro_Ash