The Curiosity Stack
A run of open questions laid one on top of another, so the reader never gets to close one before the next is opened.
Definition
What it does
Instead of opening one question and answering it, the copy opens several in a row. Each line names something specific the reader does not know: a method, a reason, a name, a number, a page. Then it moves straight to the next without settling the one before. The unanswered questions pile up rather than trade off. By the end of the run the reader is holding a handful of loose threads, and every one of them points at the same place for closure.
Why it works
Curiosity behaves like an itch. A gap between what you know and what you want to know is uncomfortable, and the mind pushes to close it. One gap is easy to walk away from. Several at once are harder, because leaving means abandoning all of them, and each new line resets attention just as interest in the last one begins to fade. Stacking also implies depth. If this much is being held back in a few lines, the reader assumes far more sits behind the door.
Where it appears
* Most frequent first, based on materials selected for the Persuasion Taxonomy corpus.
Examples of The Curiosity Stack
“How to simply 'open your mouth' — and lose your double chin. How to suck pore-enlarging blackheads right out of your face, using nothing but ordinary breakfast cereal. A simple at-home treatment for thinning hair, requiring almost no effort and time! How to use ordinary sand as an instant-sedative. How cold water — yes, cold water — can often work apparent 'miracles' on the shape and firmness of your breasts.”
A beauty and grooming mailer running through a series of at-home fixes, each named by its odd result while the method itself stays behind the order.
Why it’s this techniqueFive benefit promises run in sequence, each naming a startling result while withholding the method: 'How to simply' opens a mechanism gap, 'using nothing but ordinary breakfast cereal' names an absurd ingredient without saying how it works, and 'How cold water' pins a miracle to something free and familiar. The tell is accumulation. No single bullet resolves, and the unanswered questions compound across the list until the only route to any answer is the thing being sold. Each bullet opens its own gap, and the copy is built on the pile of them holding together as one pressure.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.88
- Source
- Eugene Schwartz, 1970s direct mail (attributed)
“Is there a strange, ethereal, mental cord that binds the consciousness of those departed from this world with those that remain? Are souls denied liberation after transition until they have communicated important messages to their loved ones? Are the fantastic experiments of the seance room trickery or fraud, or are they the result of earthbound entities seeking freedom from the confining interests of this world? Is the human consciousness suspended for an indefinite period between the spiritual and earthly realms? Is psychic communication, with minds gone on, a farce or a fact?”
A mystical order's magazine advertisement putting a run of unanswered questions about death and consciousness to the reader.
Why it’s this techniqueFive questions run back to back and not one gets an answer. 'Is there a strange, ethereal, mental cord' opens the first gap, then 'Are souls denied liberation after transition' opens a second before the first closes, and 'trickery or fraud' and 'a farce or a fact' keep adding forks. The structural tell is accumulation: each question widens the unresolved ground rather than narrowing toward a reply, so pressure builds from the count, not from any one gap. A lone teaser would resolve or pivot after the first hook; nothing here resolves.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.87
- Source
- Rosicrucian Order, 1940s print ad (attributed)
“was the exotic Clare, beloved of all men, ready to marry him at last? Or had she discovered some new trick to test his devotion? What happened when the Baron returned? What strange twist of fate was to make this rendezvous exciting beyond measure?”
A men's fiction magazine advertisement that breaks off a scene at its turning point and piles up questions about what happens next.
Why it’s this techniqueFour unanswered questions fire in sequence, each widening rather than closing the gap: 'ready to marry him at last?' then 'some new trick to test his devotion?' then 'What happened when the Baron returned?' and finally 'What strange twist of fate was to make this rendezvous exciting beyond measure?' Each one opens a loop the copy refuses to close. The tell is accumulation, the questions do not narrow toward a single answer the way one teasing hook would, they multiply competing possibilities and then stop at the peak, leaving the reader holding more open threads than the passage started with.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.82
- Source
- Bachelor's Quarters, 1940s print ad (attributed)
“One Thing I Did That Helped Me Destroy the Biggest Enemy I Ever Had to Face. The Only Way I Could Get Myself Organized. How I Learned to Find the Most Important Reason Why a Man Should Buy. How to Get Kicked Out! I Was Welcome Everywhere When I Did This. An Idea That Helped Me Get into the "Major Leagues." The Biggest Reason Why Salesmen Lose Business. A $250,000 Sale in 15 Minutes.”
A mail order advertisement for a salesman's memoir listing chapter promises that each name an episode without saying what happened in it.
Why it’s this techniqueEach line names an outcome while withholding the mechanism that produced it. 'One Thing I Did That Helped Me Destroy the Biggest Enemy I Ever Had to Face' names the result and hides the thing; 'How to Get Kicked Out! I Was Welcome Everywhere When I Did This' hides 'This'; 'A $250,000 Sale in 15 Minutes' hides everything but the number. The tell is repetition without resolution: opening after opening, none closed, each pressing forward into the next line. A single line would read as one withheld answer; the accumulation is what converts mild interest into a debt the reader can only settle by reading on.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.80
- Source
- Executive Books, 1950s print ad (attributed)
“Pricing Strategies: How to dramatically increase prices without losing customers. Host/Parasite Marketing: How to use other people's assets to generate a fortune. Risk Reversal: How to eliminate the risk of doing business so clients flock to you. Endorsement Marketing: How to get others to do your selling for you.”
A business seminar mailer naming four of its strategies by label and holding back how any of them is actually done.
Why it’s this techniqueEach line names a result and withholds the method: 'How to dramatically increase prices without losing customers' states the payoff and stops at 'How to', leaving the mechanism sealed. Four such promises run back to back, and the gaps compound: 'use other people's assets to generate a fortune', 'eliminate the risk of doing business so clients flock to you', 'get others to do your selling for you'. The tell is repetition of the same withheld-answer frame in series rather than one loop opened and closed; the accumulated weight of unanswered questions, not any single one, carries the reader forward.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.85
- Source
- Jay Abraham, 1990s direct mail (attributed)
“How to collect interest from two different banks at the same time... The two most forgotten tax deductions... Bills it's okay to pay late... What credit companies don't tell you... How to refund airlines' non-refundable ticket... How to make your car very, very hard to steal... Vitamins never to buy in a health food store... How to know when a slot machine is ready to pay off.”
A consumer information publisher's bullet run of everyday money and household tips, each one stated as a gap rather than an answer.
Why it’s this techniqueEach line withholds the one fact that would resolve it and names only the shape of the payoff: 'two different banks at the same time', 'The two most forgotten tax deductions', 'Vitamins never to buy in a health food store'. No single bullet closes, and no answer appears anywhere in the run. The tell is repetition without resolution: eight open loops set end to end, each in a different domain, so the gaps compound instead of trading off. A reader who shrugs at slot machines still catches on airline refunds, and the accumulated count of unanswered questions, not any one line, is what carries.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.90
- Source
- Boardroom, Inc., 1990s print ad (attributed)
“How to give a woman that same feeling of "I have to have him" that she gets from a guy who is rich, famous, or good looking... without being any of those things yourself — pg. 12 The thing almost all men do to try to keep a woman interested that actually repels her twice as fast... and often drives her into the arms of another man — pg. 14 A psychological tactic "regular" guys can use to make a woman ALWAYS choose them over a guy who is better looking or makes more money — pg. 15 The "mixed signal" women give in the bedroom that throws off 99% of all men... leaving her unsatisfied. Here's what to do instead. (Hint: It's not what she says, but what she DOES that matters) — pg. 61 How to finally rid yourself FOREVER of those negative "inner demons" that have been sabotaging your success with women your entire life — pg. 28”
A dating course sales page listing promises about attraction that each end at a page number instead of an answer.
Why it’s this techniqueEvery line names an outcome and hides the method that produces it. The reader learns there is 'A psychological tactic' and 'The thing almost all men do' that repels her, yet never what either is, and each withheld answer terminates in a page cite that only the book can redeem. The tell is repetition under a single roof: five separate gaps open in sequence and none closes, so the unresolved items compound into one pressure rather than resolving one at a time. Specificity like 'pg. 61' certifies the answers exist, which converts curiosity into a reason to buy rather than a benefit list.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.86
- Source
- David DeAngelo, 2000s web page
“#5: Salt Works Better than Metformin for Diabetes #4: The Truth about Those Silver Fillings in Your Mouth #3: Mystery Symptoms? It's Lyme Disease, Even If You've Been Tested #2: Do Cold Sores Give You Alzheimer's? #1: Common OTC Pill Is Making Men Weak and Impotent”
A health newsletter email counting down its most read stories, with each headline left as an unanswered question.
Why it’s this techniqueFive open loops fire in sequence, each withholding the one fact that would close it. 'Salt Works Better than Metformin' names a claim and hides the mechanism, 'The Truth about Those Silver Fillings in Your Mouth' names a secret and hides its content, and 'Common OTC Pill Is Making Men Weak and Impotent' names a threat and hides which pill. The structural tell is accumulation with a countdown, '#5' through '#1', which holds every unanswered question open at once instead of resolving one before opening the next. Threat language appears, but nothing promises relief; each line ends on the missing answer, so the accumulating unanswered set carries the reader.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.89
- Source
- Health Sciences Institute, 2010s email
“* The “fake cocaine” I shamelessly used to quickly help write nearly all my most profitable ads over the last 24+ years. * A persuasion trick straight from the book of Matthew (also used for decades to sell lots of TV Guide subscriptions too, believe it or not) I’ve used to help create multiple 7+ figure marketing campaigns over the last couple years. * The 8-word cure (I have yet to see fail) for “imposter syndrome” holding you back from making sales, getting clients, or being taken seriously.”
A copywriting newsletter email previewing the coming issue through three teased items, none of them named outright.
Why it’s this techniqueThree bullets run the same withhold in sequence, each naming a payoff while hiding what delivers it. 'The “fake cocaine” I shamelessly used' buries a tool behind a shock label, 'A persuasion trick straight from the book of Matthew' buries a method behind an unlikely source, and 'The 8-word cure' buries a script behind a word count. No loop closes. The tell is parallel repetition: one withheld item reads as a single tease, while three in a row compound into a queue of unanswered questions. The credential claims like 'over the last 24+ years' feed the gaps rather than standing as the move.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.84
- Source
- Ben Settle, 2020s email
“The bizarre "onion trick", the weird fingernail hack, getting your scalp "drunk" to detox your follicles”
A hair supplement page teasing several unnamed home remedies said to be waiting inside the customer materials.
Why it’s this techniqueThree withheld items land in sequence with nothing resolved between them: the 'bizarre "onion trick"', the 'weird fingernail hack', and 'getting your scalp "drunk" to detox your follicles'. Each is named concretely enough to feel like a real thing and left blank enough that the reader cannot picture it, so the open questions accumulate instead of closing one by one. The tell is the repetition of that same withhold shape across a series rather than a single held-back item. Oddity words such as 'bizarre' and 'weird' read as novelty bait, though no one item carries the pull; the count does.
Classification
- Primary technique
- PT-DSR-9002
- Classification confidence
- 0.76
- Source
- FoliPrime, 2020s web page
See whether your own copy uses The Curiosity Stack, and what else it is doing: analyze your copy.
Boundary Conditions
When it lands
- Each loop names something concrete and oddly specific, so the reader can picture the exact missing piece.
- The loops sit close together, three or more in a row, with nothing resolved between them.
- Every gap closes in the same place, so all the accumulated tension has one exit.
- The promised answers are real and actually get delivered, which is what keeps the next run believable.
When it dilutes
- The lines answer themselves, so each loop shuts before the next one opens.
- The gaps are vague, offering nothing definite to wonder about beyond a powerful secret.
- The run goes on so long it reads as a list, at which point the reader skims instead of leaning in.
- The payoff never arrives or turns out trivial, which teaches the reader to ignore the next run.
Taxonomic Relationships
Provenance
- George Loewenstein, 'The Psychology of Curiosity: A Review and Reinterpretation' (Psychological Bulletin, 1994), which sets out the information gap account of curiosity.
- Eugene Schwartz, Breakthrough Advertising (1966), on building runs of bullets that promise knowledge without handing it over.
- Joseph Sugarman, The Adweek Copywriting Handbook (2007), on the slippery slide, where every line exists only to pull the reader into the next one.