Hi there @dragonho and thank you for this interesting post.
"Don't choose someone you know"
I must disagree with this as there's many GOOD examples where choosing someone you know might have more benefits. There are many married couples out there with solid business plans and they work as a team and they're successful. There are also many family businesses - old and new - striving. Strong and good family ties are also good for the work environment and that's people you know.
It's just your belief or someone else's belief you take as "true".
In my post I talk about BELIEFS, how they often limit us and how to change them to make them useful. Come by and leave your feedback or just say hello!
http://steem.link/selfSTEEMbeliefs
Yes, i agree with you if we are talking about a mom and pop shop business.
If we talk about Startup as per definition of Wikipedia https://en.wikipedia.org/wiki/Startup_company then it's most likely better from my opinion to do otherwise. PS: will check out your article thanks for the contribution.