>> I do not think you should take the risk to bring in a prohibited item into the cabin of an airplane, especially when you have higher chance to be caught than to use it .<<

I agree 100% with that. t doesn´t make sense to try and sneak it into the cabin. For me it just doesn´t make sense to prohibit items that could possibly be used as a weapon (e. g. the 2" nail file or a ball point pen) and give items (e. g. the stainless steel knife or fork) that could be used as weapons with little or no effort to the passengers when they´re on board the plane.
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If it isn´t broken, it doesn´t have enough features yet.