Interesting claim about homogeneity of early-stage investors negatively impacting startup performance.

One possible explanation is that if two investors decide to work together and they don't have similar backgrounds (like college or previous workplace), it might be because have a really good independent reason to work together -- one that's actually relevant to the company they're funding.

Having gone to the same college as someone might cause one to have an irrational degree of confidence or trust in that person.

Great post! I think there does need to be some very introspective reevaluation of commonly accepted technology hiring processes.

Obtaining negative signal solely from firing decisions disregards the many other sources of information that can indicate that an employee was not a good fit in a role. In addition, in a team, bad performance of a small number of members can often be masked provided the rest of the team is very good.

Personally, I feel we should reconsider the appropriateness of a 'cultural fit' interview. As a concrete example of how this restricts the pool of applicants: asking about remuneration is a red flag, which discriminates against applicants who are not from well-off backgrounds, because for them immediate economic outcomes are very important.