I agree with MAS guy.
I also particularly liked the comment from Banasbanas on the other thread
"I attended my first CRM course before the term had even been invented. It lasted 30 seconds and consisted of a very senior pilot telling the assmbled students:
"Don't upset anyone who you think might ever be in a position to buy you a beer, tiddle in your coffee or save your life."
It's worked well for me for the last 27 years."
As long as everybody speaks up when they feel their neck is in danger there shouldn't be a problem