Notes on building and validating ideas.
AI Customer Simulation Is Booming in 2026: What Founders Should Know
Talp, Intellicia and a wave of synthetic research startups are raising money to simulate customers with AI. Here is what is happening, what the data says, and what it means for founders.
Can ChatGPT Validate Your Business Idea? What AI Can and Cannot Do
Can ChatGPT, Claude or Gemini validate a business idea? Short answer: they can help you think, but they cannot prove demand. Here is what each method does well, with sources.
Is My Business Idea Good? 9 Signs and a 10-Minute Scorecard
Not sure if your business idea is worth pursuing? Check these 9 signs, score your idea in 10 minutes, and learn what to do with a weak result.
How to Test a Business Idea Before You Build It (7 Steps, 2026)
Most startups that fail never found a market. Here is a 7-step way to test a business idea before you spend money building it, with free methods and a crowd test you can run in minutes.
Price It Wrong and Nobody Tells You, They Just Leave
Most founders pick a price by guessing, copying a competitor, or asking friends who were never going to pay anyway. Then they launch, wonder why conversions…