'There's No Good Way To Kill a Bad Idea' (qz.com)
The world is filled with bad, baseless, factually inaccurate ideas that refuse to die. From an article: Philosopher Russell Blackford, a lecturer at the University of Newcastle in Australia, tweeted about this phenomenon earlier this month: "The momentum behind bad ideas can be enormous -- they can plunge on, gathering force, long after receiving devastating criticism." If you've ever found yourself unable to halt someone else's idiotic plans once they were already in motion, you're not alone. Whether you're a politician trying to make congress see sense or simply a manager trying to halt an atrocious team-building plan, there's simply no foolproof way to kill a terrible idea. Blackford blames the momentum behind bad ideas on cascade effects. Yes, individuals are prone to making poor decisions for emotional or biased reasons (known as "cognitive heuristics") and this irrationality is part of the problem. But there's also a broader sociological issue, in that others' opinions carry a huge amount of weight in influencing our views. A cultural consensus -- even without proper evidence -- can form pretty quickly. If one person convinces a second, says Blackford, then a third person will be far more likely to agree with the majority view. This effect exponentially increases with each person who agrees with the others. "We soon have a sociological effect whereby everyone knows that, say, a certain movie is very good or very bad, even though everyone might have 'known' the exact opposite if only a few early voices had been different," says Blackford.
https://developers.slashdot.org/story/17/05/01/146201/power-of-modern-programming-languages-is-that-they-are-expressive-readable-concise-precise-and-executable
there's simply no foolproof way to kill a terrible idea
Sure there is. In business just ask for a fully costed proposal. (This also works for killing perfectly sound ideas, too.). if the proposer ever gets that finished, just tell them it's "interesting" and then shred it.
Outside of the company, in real life, you can associate the idea with something that invokes moral outrage: when someone blurts out a mind-numbingly stupid idea, just whisper in their ear "I wouldn't suggest that, you know the person who came up with it was a child-molester" (or Nazi, or whatever group is currently demonised).
If we're talking about FAKE NEWS, there really is no reason to try to kill it, so long as you are able to insulate yourself from the effects of other people's stupidity: buying gold, taking a contrarian investment, simply ignoring it or just get into the game and come up with something even more fake or exaggerated - it can be great fun if you don't take it seriously.
if you have an evil streak, you could even encourage the FAKE NEWS promoter that it is a really good idea and that they should invest in it - big time. Maybe even telling them that you know a guy and if they just give you a cash payment, you'll pass it on ...
politicians are like babies' nappies: they should both be changed regularly and for the same reasons