A manager who says “I got that wrong” gets a team that tells the truth back.

People read the room before they speak. If the person in charge never admits an error, everyone learns that errors are dangerous to mention, and the news travelling upstairs gets cleaner than reality. One honest sentence from the top rewrites that rule faster than any speech about openness, because it proves the cost of admitting something is survivable.

You do not need a title to use this. If you are running the group project or the shift, say your own mistake out loud first and without drama. Watch how quickly people start telling you things earlier.