Ask HN: How to recognize a good startup investor?

1. Does the investor have a good track record? 2. Does the investor have a deep understanding of the startup's industry and market? 3. Does the investor have a network of resources and contacts that can help the startup grow? 4. Does the investor have a history of providing valuable feedback and guidance to startups? 5. Does the investor have a willingness to take a risk on a new company? Do you agree and What else?