"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?
I came accross this sutta about Roots of All things... 
Very interesting that the enlightened persons dont even grasp to Nirvana and identify as self .

"They directly know extinguishment as extinguishment.
But they shouldn’t identify with extinguishment, they shouldn’t identify regarding extinguishment, they shouldn’t identify as extinguishment, they shouldn’t identify that ‘extinguishment is mine’, they shouldn’t take pleasure in extinguishment......
Because they have completely understood it..."

I understand this sutta as views of nirvana of those who have reached it , is not to grasp the  nirvana itself.    

Way above my pay grade where I am still struggling with 5 sense gates pleasure.   

But I think this sutta might help.   It is interesting to me that when you reach nirvana,  you let it (nirvana) go too (automatically? ).. 

https://suttacentral.net/mn1/en/sujato