The Three Inflections Test
Classify a market opening by the kind of change that created it — technological, cultural, or regulatory — then build into the gap it just opened.
- Difficulty
- Moderate
- Time to result
- ~months to results
- Steps
- 5
- Confidence
- 88%
Sam Parr's framing is that opportunities open at inflections, and there are three kinds. A tech inflection is when a capability becomes universal, like Uber existing because everyone now has an iPhone with GPS. A cultural inflection is a behaviour shift, like teens feeling comfortable filming themselves. A regulatory inflection is a law or rule change that redraws the line in the sand. Steph Smith supplies two live 2023 examples: a dozen-plus states passing pay-transparency laws, which let 26-year-old Hannah Williams build a million-follower TikTok asking strangers what they make and clear $600,000 in under a year, and the FDA relaxing its rule in October so hearing aids could be sold over the counter. The test is to name which inflection you are riding before you build, because that determines who is unblocked and how long the window stays open.
Origin
Sam Parr's recurring shorthand on My First Million for why a business becomes viable at a specific moment, drawn out here by Sean Puri when Steph Smith presented pay-transparency laws as a trend.
Core principles
- 01An opportunity needs a reason it is possible now, not just a reason it is good
- 02Tech, cultural and regulatory inflections open different doors and different timelines
- 03A rule change has second-order effects far beyond the rule itself
- 04The people newly unblocked by the change are the customers
- 05Windows close as incumbents re-price, so timing beats polish
How to run it
- 1
Find the line in the sand
Look for a discrete moment where something flipped — a law passed, a patent expired, a device became ubiquitous, a behaviour became socially normal. Steph's filter is a rule change with a date attached, like the dozen-plus states now requiring employers to publish pay ranges.
Pro tip Regulatory inflections are the easiest to source because they are published and dated.
- 2
Classify which of the three it is
Tech inflection: a capability went universal. Cultural inflection: a behaviour became acceptable. Regulatory inflection: a rule changed. The class tells you how fast the window closes — regulatory windows open all at once, cultural ones drift open over years.
Watch out If you cannot fit the change into one of the three, you probably have a slow trend, not an inflection.
- 3
List who is newly unblocked
Write down the specific population that could not act before and now can. Pay transparency unblocked every employee in a covered state who wanted to know their band; the FDA change unblocked every person who did not want to sit through audiologist appointments to get a hearing aid.
Pro tip The bigger and more boring the unblocked population, the better.
- 4
Trace the second-order effects
The rule change itself is rarely the business. Salary disclosure created demand for context around the numbers, which is what Hannah Williams monetised with a job-board affiliate link, a market research guide for email capture, Capital One workshops, and a subscription salary database.
Watch out Do not stop at the first-order product; that is where the incumbents already are.
- 5
Check who already owns the obvious slot, then take the adjacent one
Steph notes 99% of custom hearing aids are already 3D printed by a few companies that own the market. The opening is not manufacturing — it is direct-to-consumer brand and distribution, which is how Sam met a team doing 7 million a month in sales on a hearing aid brand nobody had heard of.
Pro tip When the manufacturing base is consolidated, the inflection usually pays out in distribution.
In the wild
A dozen-plus US states began requiring employers to disclose pay ranges. Hannah Williams, 26, quit a job paying about $115,000 a year and started stopping people on the street to ask what they do and what they make. Within a year she had over a million TikTok followers and 450,000 on Instagram, and monetised through an Indeed affiliate link, a lead-magnet market research guide, paid workshops with Capital One at their bank cafes, and a subscription salary database.
→ An article in January reported she had already made $600,000 since the switch, with the accounts still growing.
As of October the FDA relaxed its rule so hearing aids could be sold over the counter. Steph pointed out that 99% of custom hearing aids are already 3D printed and a few companies own that market — so the inflection payout was on the consumer side, not the manufacturing side. Sam had separately met a founder whose direct-to-consumer hearing aid brand he had never heard of.
→ That unknown DTC brand was doing 7 million a month in sales and was profitable, largely bootstrapped.
Common mistakes
Calling a slow trend an inflection
An inflection has a dated flip point. Drifting interest in a category is not one, and it gives you no timing edge — anyone could have entered last year and can enter next year. If you cannot name the date and the rule, you are just describing a market you like.
Building the first-order product the incumbents already own
The hearing aid inflection did not mean go make hearing aids — 99% of custom units are already 3D printed by a handful of firms. Attacking the consolidated core wastes the window; the money was in the newly legal consumer channel.
Ignoring that others heard the same signal
Sean's own disclaimer on the pod is the warning: after MFM mentioned a children's play space franchise, inquiry bookings filled up four and a half months out on one offhand estimate. A public inflection attracts a crowd, so speed and a differentiated angle matter more than the idea itself.
Is it for you?
Best for
Trend researchers, indie founders and operators who want a repeatable reason a business is possible NOW rather than five years ago
Not ideal for
Operators scaling an existing business with a proven channel, who need execution depth rather than new-opportunity scanning
From the transcript
“We've talked about this before when there's like regulation change, there's like a rule change, a line in the sand is drawn, and then that…”
“there's like a tech inflection, which is like Uber exists because everyone now has an iPhone”
“inflections, which is this drug is now legal or this patent is about to expire or you now in Colorado have to disclose your salary…”
“So, you guys have talked about hearing aids on the pod before. So, as of October, the FDA relaxed their rule, which basically meant hearing…”
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