Even though I'm a big fan of the can-do mentality of our American cousins, I have sometimes despaired of their cautious nature when it comes to talking tough to their bosses.  There again, perhaps they have a point.  Using honesty like a blunt instrument may have short term satisfaction but what does it do for the long term?  For advice on the right way to tell your boss (or anyone else) they're getting it wrong, have a look at this article from Bernard Marr.