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Does your landing page pass the five-second rule?
One quick test to see if customers “get it.”
Aug 20
•
Jeroen Coelen
29
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Does your landing page pass the five-second rule?
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No, AI didn't kill product-market fit
Reviewing five claims about AI and PM-fit
Aug 13
•
Jeroen Coelen
30
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No, AI didn't kill product-market fit
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Your sales pitch might be holding back your growth
How this founder changed one thing to unlock traction
Aug 6
•
Jeroen Coelen
27
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Doctor Market Fit
Your sales pitch might be holding back your growth
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For the love of god, stop comparing your startup to Lovable
Its growth is based on four unfair advantages you can’t just copy-paste
Aug 2
•
Jeroen Coelen
22
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Doctor Market Fit
For the love of god, stop comparing your startup to Lovable
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July 2025
I recently discovered I’m a hypocrite
My f*ck-up story.
Jul 30
•
Jeroen Coelen
20
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I recently discovered I’m a hypocrite
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1:39
What is your founder reflex?
Common pitfals for engineers, designers and MBAs in building a startup.
Jul 23
•
Jeroen Coelen
22
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Doctor Market Fit
What is your founder reflex?
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Get your product-market fit score (0/100)
Evaluate your pm-fit with my new ✨AI✨ tool
Jul 16
•
Jeroen Coelen
15
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Doctor Market Fit
Get your product-market fit score (0/100)
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1
What tech founders should read instead of airport pulp
Up your reading game with reading tips for the summer of 2025
Jul 9
•
Jeroen Coelen
66
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Doctor Market Fit
What tech founders should read instead of airport pulp
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The uniqueness bias
How not being unique can supercharge your startup
Jul 2
•
Jeroen Coelen
16
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Doctor Market Fit
The uniqueness bias
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June 2025
9 tips to actually get customers
I mentored six of your startups for 20 minutes. Here are the key take-aways
Jun 24
•
Jeroen Coelen
15
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Doctor Market Fit
9 tips to actually get customers
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Know about tarpit ideas? Watch out for tarpit problems!
Does your problem statement look like this red flag?
Jun 18
•
Jeroen Coelen
14
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Doctor Market Fit
Know about tarpit ideas? Watch out for tarpit problems!
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This is how beachheads boost product-market fit
How niching down gets you to a repeatable sales process
Jun 11
•
Jeroen Coelen
22
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This is how beachheads boost product-market fit
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