Yeah, cperciva, I read the "Summer 2009 Funding" post and raise the question.

YC, I am a bit confused with the sentences:

"$5000 + $5000n is not a lot, but it turns out to be enough. It will cover at least 4 months' living expenses, and that is enough time to build something nontrivial."

After 4 months, what milestone should the team arrives so that you judge the project is promising? should I prove the business model is correct in the 4 months?