如何在他们告诉小组错误/令人尴尬的信息时打断他人？

I recently read a great question on workplace.se and it reminded me of a similar situation I've come across a couple of times, where I did not know how to interrupt the speaker without embarrassing him even more. It often happens with non-technical coworkers that misunderstood something technical, but can also happen in a situation between friends. on workplace.s