Behind every startup or product idea is a stack of assumptions about your customers – and most are wrong.
Lean Customer Discovery is how you learn to test them: practice interviews against lifelike AI personas, get coached live, then run real calls that are scored so you know which of your hypotheses hold before you build.
For founders, product teams, and the accelerators training them.
Coaching you can read in a glance – never enough to pull you out of the conversation.
The reason startups build the wrong thing
You ask leading questions. People are polite. You hear what you hoped to hear – and you build it. The interview felt great and taught you nothing. It's the most expensive mistake in early product work, and almost everyone makes it.
"Would you use a tool that does X?" – "Oh, totally, that sounds useful!"
"So the problem is Y, right?" – "Yeah, exactly."
"Let me show you what we're building…"
Train the skill
Discovery is a set of learnable moves, grouped into eight modules and built from thirty-eight lessons – puzzles that unlock each concept, drills that build the reflex, and seventeen real-time simulated calls against lifelike personas who won't give up the truth easily. Every module opens with the moves it teaches, each shown as a line from a real call you can play. Real voices, live coaching. Score every call, climb the leaderboard, earn your certificate.
Open without priming, and keep your product out of your own mouth. The moment a call becomes about your idea, learning stops.
The last time, not the next time. Trade opinions for stories and stories for numbers – then leave the silence alone long enough for it to work.
Spot the wrong interviewee inside four questions and exit warmly. A good goodbye is worth a referral; a long wrong call is worth nothing.
Never "would you pay $X". Reconstruct what they already spend on this today, and tell a price objection apart from a structure one.
Report the absence of signal honestly, and deliver a correct "drop" on an idea you like. The null result is a finding, not a failure.
User, buyer, approver. Hollow enthusiasm from somebody who cannot say yes is the most expensive kind there is.
Excavate the pain underneath a sincere "it's fine", and narrow a segment mid-conversation on what people actually do.
Treat "everyone already has one" as a hypothesis rather than an answer. Then run a full call with no coaching at all.
Take it to the real world
When the skill's built, run interviews with actual people. Blake stays in your corner, a live checklist makes sure you leave with everything you came for, and every insight about your hypothesis is captured while it's fresh.
The same real-time nudges on real calls – glanceable, never distracting – so you catch yourself in the moment, not in the recap.
Everything a good discovery call should surface, ticking off as you go – so you never hang up missing the one thing that mattered.
Insights, objections, and signal about your startup hypothesis are pulled from the call and scored – so a week of interviews becomes a decision, not a blur.
Meet your coach
Blake has the intensity of the world's most demanding sales trainer – pointed at the exact opposite goal. Every time you slip into selling, leading, or hearing what you want, Blake catches it before the call is wasted.
Not a report you read afterward. A voice in your corner while it still matters – the fastest way anyone has ever learned to shut up and let the customer talk.
Who it's for
Pressure-test the idea before you spend a year building it. Learn to hear "no" clearly – it's cheaper than a failed launch.
Turn "we talked to some users" into interviews that actually change the roadmap. Repeatable, scored, comparable.
Train a whole cohort to do discovery right, and see who's actually learning it. Seats, dashboards, and progress at a glance.
Run your first practice call in the next five minutes. Find out what you've been too polite to ask.
Start practicing free