How To Pick A Startup Idea

The gist

1. Commit fully to one idea and close off the others so you get clean signal on whether it actually works.
2. The real validation bar is knowing a customer's business well enough that you could run it yourself, including their daily problems and what they would pay to fix them.
3. Talk to customers and build at the same time in tight loops rather than waiting to finish research before writing any code.
4. Pursue the most ambitious version of your idea since it takes the same effort as a modest one but is far better at attracting talent and fending off competitors.