Re: My rules of engagement with speakerphones
A totally rational view.
Also assume that any hallway, for-your-ears-only, top-secret conversations will be spread.
If you're in a business environment, assume that someone will tell someone else. Shit, this even happens at the top levels of government (if you can call the US "governed".) Speaker phones, forwarded emails, IT staff (and other taps) - all is possible.
Of course the really successful Team Leaders learn this early and have a visceral knowledge of what they should say and to whom. The TL of this story is a walking fountain of bad intelligence. Not to draw analogies to the current US TL situation.