Red flags include: 1. The founders' pitch consists mainly of the latest buzzwords. 2. They are either all technical or all sales/marketing. 3. They have a bl

Red flags include: 1. The founders' pitch consists mainly of the latest buzzwords. 2. They are either all technical or all sales/marketing. 3. They have a blind belief in the product despite repeated market signals and iterations. 4. Their only fallback plan is to "monetize the data". 5. They value equity more than revenue.