Saying that everybody knows is almost never a mistake. The statement isn’t sloppy reasoning. It’s a strategy that aims to cut off discussion or objection, to justify fraud and deception, and to establish truth without evidence.
This isn’t my experience; I usually find people to use the expression “everyone X” out of frustration, in situations when they really do feel that everyone X, and can’t believe that the other person thinks that not-X is normal or reasonable.
This isn’t my experience; I usually find people to use the expression “everyone X” out of frustration, in situations when they really do feel that everyone X, and can’t believe that the other person thinks that not-X is normal or reasonable.