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For example, you're doing a research for a car to purchase. You get a list of cars with engine number, city where a car was assembled, and a color. What's missing is make, model and price.

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closed as general reference by Robert Cartaino Nov 16 '11 at 15:06

This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information.If this question can be reworded to fit the rules in the help center, please edit the question.

Misinforming, maybe? – Mateen Ulhaq Nov 16 '11 at 5:57
We're really trying to avoid using this site for "single word requests." If you have a particularly interesting problem to solve, all we ask is that you put a bit of effort and research into the question. See: meta.english.stackexchange.com/questions/1654/… or meta.english.stackexchange.com/questions/2160/… – Robert Cartaino Nov 16 '11 at 15:05
up vote 5 down vote accepted

When it's done deliberately, it's obfuscation.

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The irrelevant information could be described as a smokescreen.

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To sidetrack is to direct a person's attention away from the relevant subject to an irrelevant one.

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Specifications can be slanted, imperfect, flawed, missing, incomplete, deficient, deceptive, blemished, embellished, camouflaged, cherry-picked, or corrupt because of mendacity, laziness, misinformation, turpitude, equivocation, double dealing, a shell game, forgetfulness, delay, propagandizing, or random error; no one word will fit all cases. Other possibly related phrases: pull the wool over your eyes, sell you some snakeoil, rigamarole, specmanship.

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