1. How do you judge whether co-founders are good friends? I'm guessing a simple "how long have they been working together" test is a good indication, but anything else?
2. What level of feedback do you usually give teams that didn't make it? Especially teams that got to the interview stage but didn't make it through? I'm wondering if you've ever told a team your suspicions that they're not good enough friends (I'm assuming if you did, you phrased it better than that.)