Someone I know had an interesting technique used on him. He was on an important but unpopular project, and was presenting the facts making this project necessa

Someone I know had an interesting technique used on him. He was on an important but unpopular project, and was presenting the facts making this project necessary. Hard to schedule meeting with lots of important people. So a high-ranking exec says: Your numbers are wrong. He didn't get answer on why this was stated or what the correct numbers would be. The whole raison d'aitre for the project disappeared under his feet. They lost a lot of time in the discussion about numbers, and the meeting was over before it even got started. A month of time lost before next meeting, and everyone pissed of. So afterwards another exec pulls him aside and said he was victim of a classic meeting sabotage trick, that was used on a regular base by that specific high-ranking exec.