Manufactured Habits: How Marketing Became “Tradition” — and the Pause-Before-You-Buy Filter
This is a calm, optional companion to the rest of the course — awareness, not a rulebook. A surprising number of spending habits that feel timeless and “just how things are done” were actually built, often deliberately and often within the last hundred years, by advertising and industry. Knowing this is not a reason to feel foolish for taking part in any of them. These were brilliantly executed campaigns; they shaped entire generations, including the people who wrote this material. The point of this section is only to help you tell the difference between “I genuinely value this” and “I never thought to question this.” When you can tell which is which, you spend with far less regret — and spending money on the things you truly care about, with your eyes open, is one of the real pleasures of adult life. The goal here is just to make sure that’s what you’re doing.
How to read this section
None of the examples below is an attack on the practice itself. People get married, brush their teeth, exchange gifts, and shop the sales for good reasons, and there is nothing wrong with enjoying any of it. The only thing worth noticing is the origin: many “must-have” categories are far younger and far more engineered than they feel. That doesn’t make them bad. It makes them a choice rather than a requirement — which is a much more comfortable place to spend from.
Two small habits make this whole section usable. First, before any purchase large enough to affect your month, ask: “Is this something I actually wanted, or something a campaign trained me to want?” Either answer is fine; both can be true at once. Second, none of this requires you to have money to spare — nearly every “manufactured” habit has a cheaper or free alternative that was once perfectly normal, which is genuinely useful if money is tight.
A note before the examples: this is consumer-awareness education. A few of the items below touch on health (dental care, supplements). Those passages describe general patterns and are not medical advice — a licensed professional can tell you what actually applies to your body. There’s a fuller note on that, and on the pricing-law material, near the end.
The diamond engagement ring
Before the late 1940s, a diamond was not the default engagement stone in the United States. By the most commonly cited figure, only around one in ten American engagement rings featured a diamond as recently as 1940; many used other stones, a family heirloom, or no center stone at all, and diamonds were seen mostly as luxuries for the very wealthy rather than as symbols of marriage.
That changed because of one of the most successful advertising campaigns in history. In 1938 the De Beers diamond company hired the U.S. agency N.W. Ayer & Son to rebuild demand, which had slumped through the Depression. The campaign worked deliberately and quietly — placing diamonds in Hollywood films, seeding magazine and society-column stories, and sending lecturers to schools and women’s groups — to normalize the diamond engagement ring among the middle class. In 1947, by the account she repeated for the rest of her life, a young Ayer copywriter named Frances Gerety, working late and realizing she had forgotten a signature line, wrote four words: “A Diamond Is Forever.” By most accounts that slogan has appeared in every De Beers engagement advertisement since 1948, and in 1999 Advertising Age named it the slogan of the 20th century. Within roughly a single generation the diamond engagement ring went from unusual to expected; by the 1990s, surveys put the share of American engagement rings featuring a diamond at around 80 percent.
The popular “two months’ salary” guideline (sometimes one month, sometimes three) has the same origin. It is not an old etiquette rule or social custom — it comes directly from De Beers advertising, which pushed salary-based benchmarks over the following decades. There is no historical, religious, or etiquette-book source for it; it was a number designed to tie the size of the purchase to the buyer’s income.
There is a second, quieter half to the story. De Beers, founded in 1888 by Cecil Rhodes, spent much of the 20th century controlling a very large share — commonly cited as roughly 80 to 90 percent at its peak — of the world’s rough-diamond supply. Diamonds are not, geologically, especially rare; the company cultivated an impression of scarcity by stockpiling stones and releasing them in carefully limited quantities, and it worked to discourage a resale market, since a flood of resold diamonds would reveal how little a stone fetches once bought. That combination — controlled supply, an emotional story, and a suppressed resale market — is a large part of why a diamond can cost thousands at retail yet be hard to resell for a fraction of that. The classic account of this is Edward Jay Epstein’s 1982 Atlantic investigation, “Have You Ever Tried to Sell a Diamond?” The grip has loosened in recent decades, as supply from Russia, Canada, and Australia, and the rise of chemically identical lab-grown diamonds, have challenged the model.
None of this is a reason not to buy a diamond. An engagement ring is jewelry that two people enjoy. The only useful takeaway is that there is no objectively “correct” amount to spend, and the choice has nothing to do with the depth of a relationship.
Two daily habits that ads built
Toothbrushing. Brushing twice a day is genuinely good for your teeth. It is also a habit that barely existed in the United States before the 1920s — by widely repeated estimates, fewer than one in ten Americans brushed regularly around 1900. The advertising executive Claude Hopkins was hired to sell Pepsodent toothpaste and built the campaign around an unsightly “film” on the teeth — a naturally occurring layer that builds up on everyone regardless of diet, and that the toothpaste did nothing special to remove. The ads told readers to run their tongue across their teeth, feel the film, and link Pepsodent to a clean tingle and a brighter smile. Within about a decade, polls found more than half of Americans brushing daily. (This case is the centerpiece of Charles Duhigg’s book The Power of Habit, which traces how the campaign engineered a cue, a routine, and a reward.) The product was useful; the daily habit was largely created by the campaign. Worth keeping — and worth knowing the origin of.
Mouthwash and “halitosis.” Listerine was invented in the 1880s as a surgical antiseptic, and was also sold over the years as a floor cleaner and a general-purpose germ-killer. In the 1920s the owner’s son, Gerard Lambert, took an obscure, Latin-derived medical word — “halitosis” — and used it to reframe ordinary bad breath as a condition that needed treatment. A wave of advertisements told the story of a young woman, attractive but unknowingly afflicted, who was “always a bridesmaid, never a bride.” The condition was real (people have always had bad breath); the panic was manufactured, and with it an entire product category. Listerine’s annual revenue rose enormously over those years — from roughly $100,000 in the early 1920s to several million dollars by the end of the decade. (Sources disagree on the exact endpoint.)
The pattern in both cases — and in many personal-care categories since — is the advertising playbook of naming a previously-unremarked anxiety and selling the cure. A version of it is still in use, almost word for word, today.
Food, drink, and “wellness”: follow the funding
One of the cleanest documented examples of industry shaping what looks like neutral health advice is the 1967 sugar review. A U.S. sugar-industry trade group, the Sugar Research Foundation, paid Harvard researchers to write a literature review that downplayed sugar’s role in heart disease and pointed instead to dietary fat. The payment (about $6,500 at the time, roughly $48,000 in 2016 dollars) was not disclosed — the New England Journal of Medicine, where the review ran in 1967, did not require conflict-of-interest disclosure until 1984. This was documented in 2016 by researchers at the University of California, San Francisco (Kearns, Schmidt, and Glantz) in JAMA Internal Medicine, working from the trade group’s archived correspondence. The researchers are careful that there is no proof the funder edited the manuscript directly; the documented facts are that the group initiated and paid for the review, helped select which studies it covered, and that the funding was hidden. Their assessment — that this helped steer decades of U.S. nutrition discussion toward fat and away from sugar — is an interpretation, but a well-supported one. The durable lesson is simple: when you see a “study shows” headline about food or supplements, it is always worth asking who paid for the study.
A related everyday example is the daily multivitamin. Roughly a third of U.S. adults take one. The honest state of the evidence, for generally healthy, well-nourished adults, is this: large randomized trials — the Physicians’ Health Study II (more than 14,000 male physicians, about 11 years) and the COSMOS trial (more than 20,000 older adults) — and a 2024 analysis of around 390,000 people found that a daily multivitamin does not reduce all-cause mortality or cardiovascular disease. The cancer evidence is mixed and modest at best (the Physicians’ Health Study found a small, roughly 8 percent reduction in cancer incidence with no mortality benefit; COSMOS found no cancer benefit). The U.S. Preventive Services Task Force currently finds the evidence insufficient to recommend for or against multivitamins for preventing cancer or heart disease. None of this means supplements are useless: specific ones genuinely help specific people — vitamin D where deficient, B12 for many vegetarians and vegans, folic acid for people who are or may become pregnant, iron for documented anemia. The point is only that the broad “can’t hurt, might help” multivitamin is mostly paying for a feeling of doing something — and a licensed physician or registered dietitian can tell you what, if anything, you actually need.
The upgrade cycle: built to be replaced
The idea of deliberately designing a product to be replaced has a documented origin. In December 1924, the world’s leading lightbulb makers — including General Electric, Germany’s Osram, the Netherlands’ Philips, and France’s Compagnie des Lampes — met in Geneva and formed what became the Phoebus cartel (incorporated in early 1925). At the time, household bulbs commonly lasted 2,500 hours or more. The cartel agreed to engineer that lifespan down to a standard of about 1,000 hours, tested members’ bulbs at a central Swiss laboratory, and fined any member whose bulbs lasted too long — all so customers would buy bulbs more often. The cartel broke up around the start of World War II, and later U.S. antitrust findings pointed to profit, not engineering necessity, as the motive. (In fairness, there is a real trade-off — a shorter-life bulb can be brighter for the same wattage — but the internal records and the fines make the commercial intent hard to miss.) This is well documented, including by IEEE Spectrum and in the cartel’s own surviving correspondence.
That same logic — make last year’s version feel dated — now shapes how cars, phones, appliances, and clothing are sold: yearly model restyles, “upgrade” programs that fold a new device into a monthly bill, and trend cycles that make wearing the same things twice feel like a problem to solve. None of it is a law of nature. A car kept ten to fifteen years with reasonable maintenance, a phone used until it actually stops working, or a small wardrobe of clothes you like is dramatically cheaper over a lifetime than the replace-every-few-years version — and usually not worse.
Holidays and gifting
Many holiday spending norms were added on top of the holiday well after it existed. The clearest case is the founder of Mother’s Day, Anna Jarvis, who organized the first observances in 1908 and successfully lobbied to make it a U.S. national holiday in 1914. Her intended version cost almost nothing: a handwritten note, church, time with one’s mother. Within roughly a decade, florists, candy makers, and the early greeting-card industry (including Hallmark, whose first Mother’s Day cards date to the 1920s) had turned it into a major shopping occasion — and Jarvis spent the rest of her life fighting that. She organized boycotts, sued companies for using the trademarked term “Mother’s Day,” criticized charities and even First Lady Eleanor Roosevelt for fundraising on the day, was arrested in 1925 for disturbing the peace at a convention, and in one press release demanded action against “charlatans, bandits, pirates, racketeers, kidnappers and other termites.” She died in 1948, largely penniless, in a Pennsylvania sanitarium; by some accounts her care was reportedly paid in part by the very industries she had spent her life protesting (a detail that is widely repeated but not firmly documented). The original version of the holiday still costs nothing. Everything layered on top was added by people who sold the things.
The broader “Hallmark calendar” — the steady expansion of card-and-gift expectations around Valentine’s Day, Father’s Day, graduations, and newer occasions — followed similar arcs, driven by the card, candy, and gift industries rather than by spontaneous public demand. Enjoy the ones you value; the only move worth making is to ask, each year, which parts you actually care about and which you do because you assume you have to.
Sales events: Black Friday, Cyber Monday, and Prime Day
This deserves its own section, because the big sale events are among the most carefully engineered shopping experiences in modern life — and because real deals genuinely do exist inside them, which is exactly what makes them worth understanding rather than avoiding. The goal here is not to talk you out of enjoying a sale. It is to let you see the machinery, so the choice stays yours.
What these events actually are. None of them is as old or as natural as it feels.
Black Friday wasn’t coined by retailers at all. The term for the day after Thanksgiving was used by Philadelphia police in the 1950s and 1960s to describe the traffic and crowds (suburban shoppers plus the city’s annual Army–Navy football game). The cheerful “the day stores go from the red into the black” story is a later rebrand, not the origin. Retailers deliberately built the day up from roughly the 1980s onward, with early openings and “doorbuster” deals, and by the National Retail Federation’s count it became the busiest in-store shopping day of the year (by number of shoppers) around 2003.
Cyber Monday is even more openly invented: the term was coined in 2005 by Shop.org, the digital division of the National Retail Federation, after retailers noticed a spike in online orders the Monday after Thanksgiving (people back at work with fast connections). It was, from day one, a marketing label attached to a pattern.
Prime Day is a holiday a single company made up. Amazon launched it on July 15, 2015, to mark its 20th anniversary, explicitly as a “Black Friday in July.” Unlike Black Friday and Cyber Monday, it is tied to no holiday at all — it exists to drive Prime membership sign-ups, to put a jolt into the slow summer shopping season, to clear and test inventory before the holidays, and to showcase Amazon’s own devices. It has since grown from one day to several, and competitors now run copycat events alongside it.
The mechanics worth recognizing. A few specific techniques do most of the work:
Anchoring to an inflated “original.” A deal feels big in proportion to the “was” price beside it. The FTC’s own Guides Against Deceptive Pricing (16 CFR Part 233) say a “former price” is only a legitimate comparison if the item was actually offered at that price, to the public, on a regular basis, for a reasonably substantial period — and that setting “an artificial, inflated price… for the purpose of enabling the subsequent offer of a large reduction” makes the bargain a false one. The catch is that the FTC has largely not actively enforced these guides for decades; most real enforcement now comes from state consumer-protection laws and private class actions (for example, a 2014 California judgment of about $6.8 million against Overstock over inflated reference prices). Independent checks have repeatedly found inflated reference prices in the wild: a 2017 Consumer Watchdog study of 1,000 Amazon products reported that the site’s “was” prices, on average, exceeded the highest price the item had actually sold for by around 70 percent, and that in roughly four in ten cases the reference price was higher than any price ever observed.
Products you can’t price-check. Especially with electronics, manufacturers make “derivative” models just for big sales — either an existing product given a new model number, or a slightly stripped-down version (say, one fewer HDMI port or cheaper parts) built to hit a low price. Consumer Reports has documented this for years. It does two things: it makes direct price comparison impossible (you won’t find that exact model anywhere else), which conveniently defeats price-match guarantees that require the identical model; and because the model is brand-new, it has no price history, so the “original” price can essentially be invented. A quick defense: search the exact model number, and if the only results are sale ads with no real reviews, it’s likely a derivative.
Doorbusters as bait. A deeply discounted, limited-quantity item exists largely to get you in the door (or the app); once you’re there, you tend to buy other things that aren’t on sale. The “limited quantities” framing also manufactures urgency, and a rain check doesn’t guarantee you’ll ever get the item.
Scarcity and a ticking clock. Lightning deals, countdown timers, and “only 3 left” counters are designed to convert hesitation into a fast decision before you’ve thought it through.
Why they’re built this way. These events are profitable far beyond the day’s sales: they pull forward and concentrate demand, drive membership and app installs, let retailers clear inventory and stress-test their logistics, and generate enormous amounts of shopper data. That’s not sinister — it’s just worth knowing that the urgency you feel is a designed feature, not a fact about the deal.
A calm way to approach them. You don’t need to skip the sales. A few habits keep you in control:
Decide what you need before the event, ideally days ahead, and treat the sale as a chance to buy that — not as a list of things to discover.
Use one honest test: “Would I buy this, at this price, if it weren’t labeled a deal?” If yes, enjoy it. If the label is doing the persuading, wait.
Know that the date isn’t magic. “Lowest price of the year” usually isn’t. Consumer Reports has found that a sizable share of TVs — roughly 40 percent in one survey — were actually cheaper after Black Friday, and electronics are often at their lowest around the Super Bowl or when new models launch. For things with a real price history, glancing at that history (many browser tools and sites track it) tells you more than the size of the advertised discount. (This is a durable principle, not an endorsement of any one commercial price-tracker.)
Remember the all-in math, especially for anything recurring you sign up for “because it’s on sale.”
State rule — deceptive “sale” pricing. What varies: because federal enforcement of the deceptive-pricing guides is limited, your strongest protection against fake “original” prices is state law, and the rules differ. Several states require that a “former” or “regular” price actually have been charged within a set recent window — for example, roughly the preceding 30 days in some states, or a set number of days within the prior 90 in others — before it can be used in a comparison. Where to check: your state Attorney General’s consumer-protection office (search “[your state] attorney general deceptive pricing” or “false sale price”), which is also where you’d report a suspected violation.
When an industry pays to keep you confused
A few of the most expensive habits in American life weren’t built by advertising at all. They were built, and are maintained, by lobbying — industries paying to keep things complicated, opaque, or tilted in their favor. These aren’t really consumer behaviors; they’re features of the system that quietly cost ordinary people money. They’re listed here so you know they exist — and so you stop blaming yourself for finding confusing something that was deliberately built to confuse you.
Tax-filing complexity. In many peer countries, most ordinary employees don’t “file” a return at all — the tax authority already has the wage data, calculates the bill or refund, and the taxpayer just confirms it. In the U.S., filing is harder largely because of well-documented lobbying by the tax-preparation industry, most prominently Intuit (maker of TurboTax), to keep the government from offering simple free filing. The nonprofit newsroom ProPublica reported extensively on this, including a 2019 investigation finding that Intuit had worked to hide its free-filing option from search engines while heavily marketing paid products labeled “free.” In 2022, Intuit agreed to a $141 million settlement with the attorneys general of all 50 states (and D.C.) over those “free” advertising practices, without admitting wrongdoing; payments went to roughly 4.4 million consumers. (The FTC separately found in January 2024 that the company had advertised deceptively; that administrative order’s status is now in flux. The state settlement stands.) Free options do exist at irs.gov: the IRS Free File program (free guided software for taxpayers under an annually-set income limit — an adjusted gross income of $89,000 or less for the 2026 filing season, through a set of partner companies), plus the in-person VITA and AARP Tax-Aide programs. The IRS also ran a fully government-operated Direct File tool as a pilot in 2024 and 2025; it has been discontinued and is not available for the 2026 filing season (the IRS cited low adoption and high per-return cost; consumer advocates objected). The general lesson holds: if filing feels harder than it should, that’s not an accident — it’s a business model.
Real-estate commissions. For decades the standard U.S. commission ran about 5 to 6 percent of the sale price, effectively locked in by industry rules even though no law required it. After a 2023 federal jury found the National Association of Realtors had conspired to inflate commissions, the NAR agreed in 2024 to a $418 million settlement and to practice changes that took effect August 17, 2024: offers of buyer-agent compensation can no longer be posted on the Multiple Listing Service, buyers must sign a written agreement with their agent before touring homes, and buyer-agent commissions are openly negotiable. Worth correcting one common expectation, though: despite predictions that this would push rates down, the data through 2025–2026 shows average commission rates roughly flat (some surveys even tick slightly up), because the underlying mortgage-financing dynamics kept the traditional model largely in place. The durable, usable point isn’t “commissions fell” — it’s that they are now explicitly negotiable, and you should treat them that way rather than defaulting to the old percentages.
Subscriptions that are easy to start and hard to stop. You’ve likely noticed that signing up takes one click while canceling takes a phone call, a “retention specialist,” or a link buried five menus deep. This is deliberate, well-studied, and has an industry name: “dark patterns,” which the FTC and state attorneys general have pursued. One important and very recent update: the FTC finalized a “click-to-cancel” rule in 2024 that would have required canceling to be as easy as signing up — but a federal appeals court (the Eighth Circuit) vacated that rule in its entirety in July 2025 on procedural grounds, and it never took effect. As of early 2026 the FTC has begun the process of potentially issuing a new version, but for now there is no federal click-to-cancel rule in force. What does still protect you: the federal Restore Online Shoppers’ Confidence Act (ROSCA), the FTC’s general authority against unfair and deceptive practices, and state auto-renewal laws (more than half the states now have them, several stricter than the vacated federal rule). The practical defense doesn’t depend on any of that: when you start anything recurring, set a calendar reminder to re-decide in about 25 days, and cancel through a written record (email or chat) so you have proof if a “we never got your cancellation” dispute arises.
Repair locks. Many products have been deliberately hard to fix outside the manufacturer’s own channels — software locks, withheld parts, refused service — creating a captive, higher-priced repair market. In recent years, “right-to-repair” laws have begun to pass in a number of U.S. states and the area is actively contested, with the specifics changing fast; if this matters for a purchase, it’s worth confirming your state’s current law. The buying lesson is durable even where the law isn’t settled: products from manufacturers who genuinely support repair are usually far cheaper to own over their lifetime.
Pause Before You Buy: a five-question filter
Use this on any purchase large enough to meaningfully affect your monthly budget. It takes about two minutes, and it is not anti-spending — it is anti-default-spending.
Where did the idea come from? Did I want this an hour ago, or did I see an ad, an influencer, or a sale email today? Anything that arrived through a feed today deserves at least 24 hours of thought.
What is this replacing? If I already own one, what’s actually wrong with it? “It’s older” is not a reason. “It’s broken, or no longer does what I need” is.
Is the “tradition” behind this older than my grandparents? Many “must-have” categories — diamond rings, multi-step routines, holiday gift hauls, a new car every few years — are younger than that. That doesn’t make them bad; it makes them a choice rather than a requirement.
What is the all-in cost over a year, or five years? Subscriptions especially deserve this multiplication: $14.99 a month is about $180 a year and roughly $900 over five years.
If I don’t buy this, what will actually happen? Be honest. Often the answer is “nothing.” Sometimes it’s “I’d be a little uncomfortable for a few days.” Sometimes it’s “I genuinely need this.” All three are valid — the point is to know which one you’re in.
A reminder to end on: spending money on things you actually value, with your eyes open, is one of the genuine pleasures of adult life. A common reaction to material like this is a small wave of embarrassment about past purchases — please skip it. These campaigns worked on entire countries for the better part of a century; noticing them at all puts you ahead of the average shopper. You don’t have to give up diamonds, weddings, holidays, skincare, new gadgets, or a good Black Friday deal. The only thing this section asks is that, going forward, when you spend on these things, you do it because you genuinely want to — not because you never thought to ask.
A note on what this is, and isn’t
This page is general consumer-awareness education, not advice about your specific situation. Three honest limits are worth stating plainly. First, the passages touching on health — toothpaste, supplements, multivitamins — describe documented general patterns and research findings; they are not medical or dietary advice, and a licensed physician or registered dietitian is the right person to tell you what applies to your body (don’t start or stop a supplement based on a finance course). Second, the pricing-law material describes how the FTC guides and state laws generally work; it is not legal advice, the federal guides are largely unenforced while state rules vary, and a suspected deceptive-pricing violation should go to your state Attorney General’s consumer-protection office. Third, this section never tells you what to buy or not buy — that’s your call. Its only job is to make the machinery visible so the call is genuinely yours.
Key takeaways
Many spending norms that feel timeless — the diamond ring, daily mouthwash, much of the “wellness” aisle, the holiday gift calendar — were built by marketing or industry, mostly within the last century. Knowing this isn’t a reason for embarrassment; it just turns a “requirement” back into a “choice.”
The big sale events are engineered. Black Friday’s friendly origin story is a retailer rebrand, Cyber Monday is a 2005 marketing coinage, and Prime Day is a holiday Amazon invented in 2015. Real deals exist inside them — the point is to recognize the anchoring (inflated “original” prices), the price-proof-resistant “derivative” models, the doorbuster bait, and the countdown-timer urgency, so you can enjoy a sale on your own terms.
For sale prices, the date isn’t magic and “lowest price of the year” usually isn’t; deciding what you need beforehand, asking “would I buy this at this price if it weren’t called a deal?”, and glancing at an item’s real price history protect you better than the size of the advertised discount.
A few expensive habits aren’t your fault at all — tax-filing complexity, real-estate commissions, hard-to-cancel subscriptions, and repair locks are kept that way by lobbying. Knowing they exist (and that free filing, negotiable commissions, written cancellations, and state protections are available) stops you blaming yourself for being confused by something built to confuse you.
The Pause-Before-You-Buy filter — where did the idea come from, what’s it replacing, is the “tradition” older than your grandparents, what’s the all-in cost, and what happens if you don’t — is the one tool to carry out of this section. It’s not anti-spending; it’s anti-default-spending.
Educational disclaimer: This page provides general financial education for a general audience in the United States. It is consumer-awareness information, not individualized financial, legal, tax, medical, or dietary advice, and it does not tell you what to buy or how any law applies to your specific situation. Laws, rules, prices, and program details change and vary by state. For health decisions, consult a licensed physician or registered dietitian; for a suspected deceptive-pricing or consumer-protection issue, contact your state Attorney General’s consumer-protection office or the FTC (consumer.ftc.gov); for tax-filing questions, see irs.gov. Date-sensitive figures here were verified against official or primary sources as of June 2026; always confirm current numbers at the source before relying on them.