You need to put “not” in the right spot in a sentence to make it say what you intend. “Not all fraternity members are drunks” means some are, but “All fraternity members are not drunks” means none of them is.
not
You need to put “not” in the right spot in a sentence to make it say what you intend. “Not all fraternity members are drunks” means some are, but “All fraternity members are not drunks” means none of them is.