there is always the 'can't see the forest for the trees' phenomena in a workplace...that's were the 22 yr old whipping by on  a skateboard ...at work...comes in handy.  or the devil's advocate - most likely your project's what-if's and possible fails will get discovered/discussed if you let that person speak. *** I found the utminers  link and my ears almost started bleeding.  it's like a disclaimer to every aspect of being a human with opinions.   I did find #7, the appeal to heaven,  amusing... individuals who do this risk being locked up in a rubber room. my family must never see this.