Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: After open, how to close it?  Is the close way safe enough to avoid to hurt your hand?  Many thanks!
Document: this knife is great looking and easy to flip open and close, the coating looks great but after about a week the entire blade started to rust, not pitting but enough to make me worry and to ruin the look of the knife. the knife has seen no salt water and has been oiled and cleaned. kershaw makes good knives but for the price this one does not thrill me.
You may either then use two hands to open it, or use centrifugal force to open it by making a quick "flipping" motion with your wrist. This is one of the knife's weaker points, as I like one-hand opening with more control and a less violent motion. An ambidextrous thumb stud, as featured on so many of Kershaw's other knives, would really ratchet up the utility of this design.The knife is a little heavy, as the blade is a thick, wide piece of steel.
I almost sent this one back until I read the enclosed instructions that advised a wrist flick to complete the opening lockup of the blade. Better yet, after I placed the knife in my left hand I immediately noticed I could not only open it in my left hand, but the  right side pocket clip did not get in the way of a good solid lefty hand hold.
Wow! This knife is substantial to say the least. It is about as large as I care to carry. I really do like it though and I expected from other reviews it would be a large knife. And like so many other reviews, I must say I don't care much for the pocket clip. It just doesn't need to be designed that way and I would like to see Kershaw offer a more functional and less conspicuous clip even if sold separately for a few bucks.
This is a great pocket knife. I'm not a serious collector so I don't have any real complaints about the size of the pocket clip. I've seen reviews where people claim it was sharp enough to cut through paper out of the box. Mine didn't come that way, but its plenty sharp. I really like the size of it as well.
The action is so smooth that I can open the knife just by flicking the stud without any wrist motion.The composite blade is nice, the harder steel of the cutting edge holds a nice edge for longer than other knives I have.Cons:Note - Some of these are not so much cons as something to keep in mind.Some have complained about the pocket clip getting in the way, not being able to change it to the other end of the knife, etc.
The handle is basic g-10 laminate which holds up great and is durable. I particularly like the handle design, it has a large relief for the index finger so the grip is very secure preventing your hand form slipping up on the blade even when penetrating thick objects. Also the edges of the grip are rounded enough to prevent it from wearing holes in your pants if you carry tucked under your belt.
I have been extra careful with this blade since I cut my myself twice and didn't even feel it  break the skin. Luckily I have not cut deep enough to draw blood but scary still. The handle is grippy not to impressed with it but the knife feels great in hand due to the ergonomics of the handle. No lanyard hole is it an issue I don't think so it could use it but don't miss it really.
The handle shape, and the position of the flipper when opened provide an nice deep choil that prevents your hand from sliding forward onto the blade and provides good retention. The blade is strong and has the sharpest edge I have ever seen on a knife! The blade has just enough belly to make it an excellent slicer. I have already put this blade through some heavy use and abuse and it is still as sharp as the day I got it.
I wanted a good quality pocket/EDC knife. I was skeptical about spending this much (and I know to collectors this isn't much  but for the layperson it is expensive) for a knife but I couldn't be more pleased. This knife is beautiful and feels great in the hand. It is weighted/balanced perfectly. It came out of the box sharp enough to shave with and looks absolutely fantastic with the copper separating the 2 types of steel. This is a knife I will keep for a very long time.
Answer: no