My take on Dunning Kruger. 

One of the biggest problems with this psychological effect is how it's misunderstood by pseudo intellectuals. Unfortunately simply by proclaiming that another is under the effect of DK they in their extreme hubris have decided that they are in fact the bearer of great insight into any given subject, comically ironic at least. Secondly it is NOT an argument it is the antithesis of exactly that. By accusing ones opponent of suffering with DK one is attempting to shut down any and all discussion on any matter and as such feel that they require no evidence to back up their own argument. Usually because they themselves have put in no effort to understand or gain any personal knowledge on the subject. 

Thirdly it stifles the acquisition of knowledge in a very sinister way. If one has absolutely no knowledge on a subject conversation is generally steered towards a subject both parties hold some knowledge on and thus stopping one or both from gaining new and exciting knowledge on any given subject and in that way continuing and extending ignorance. But if one of the party believes they do have an insight into said subject and is 180 degrees wrong, and the other may be an expert on the subject a door has been opened to relieve one another of ignorance. 

Forthly, a little knowledge is the door to more knowledge whereas the one who says you don't know everything therefore you know nothing is like a creationist, when the big bang is explained and the science orientated one declares his ignorance regarding the few Planck lengths of time in the very beginning the truly ignorant creationist says "see you don't know so God did it. "

In conclusion I'd recommend no one accuses another of suffer with DK unless that someone has declared they are an expert on a subject you know them to be uneducated in. 

In even more conclusion I point anyone willing to understand anything better than they do now towards this little ditty ................

........ GO PLACIDLY amid the noise and the haste, and remember what peace there may be in silence. As far as possible, without surrender, be on good terms with all persons.

Speak your truth quietly and clearly; and listen to others, even to the dull and the ignorant; they too have their story.

Avoid loud and aggressive persons; they are vexatious to the spirit. If you compare yourself with others, you may become vain or bitter, for always there will be greater and lesser persons than yourself.

Enjoy your achievements as well as your plans. Keep interested in your own career, however humble; it is a real possession in the changing fortunes of time.

Exercise caution in your business affairs, for the world is full of trickery. But let this not blind you to what virtue there is; many persons strive for high ideals, and everywhere life is full of heroism.

Be yourself. Especially do not feign affection. Neither be cynical about love; for in the face of all aridity and disenchantment, it is as perennial as the grass.

Take kindly the counsel of the years, gracefully surrendering the things of youth.

Nurture strength of spirit to shield you in sudden misfortune. But do not distress yourself with dark imaginings. Many fears are born of fatigue and loneliness.

Beyond a wholesome discipline, be gentle with yourself. You are a child of the universe no less than the trees and the stars; you have a right to be here.

And whether or not it is clear to you, no doubt the universe is unfolding as it should. Therefore be at peace with God, whatever you conceive Him to be. And whatever your labors and aspirations, in the noisy confusion of life, keep peace in your soul. With all its sham, drudgery and broken dreams, it is still a beautiful world. Be cheerful. Strive to be happy.

By Max Ehrmann © 1927