"grasping a sign", "fixed view", and suffering

I heard that "grasping a sign" is considered a bad thing in Buddhism. Why is that so and what does that refer to? We know that "attachment to views" is a bad thing too. Are these related? (signs and views)? Does Buddhism say anything about broad generalizations vs. careful analysis? Is this topic connected with signs and views, too? Does all of the above tie to suffering somehow?