My favorite example is "are lemons acidic?" It's full of "alkaline diet" sites trying to SEO itself into convincing people that lemons are good for you because they're an alkaline. It's become a little less inaccurate over the years but is still dodgy. Then again the answers are so consistent and I'm so used to trusting the first page of Google that I'm almost convinced that lemons alkalinize your body.
I'm not even sure Google's behaviour is wrong in this instance. The kind of person who would google something as obvious as that is probably actually more interested in the woo-answer, and I don't neccesarily think it's Google's job to be the woo-police (as appealing as that sounds, it's risky unless they can do a 100% accurate job). To illustrate with another example, if I ask Google where the government is hiding t…
That's what I get in the answer box. Wow.
I think it absolutely is Google's job to be the woo police in the privileged answer box. They can just choose not to display it for answers they're not confident in owning and leave you with the general search results.
It probably needs to be a whitelist. Most of the time it's wikipedia anyway (a whole other can of worms, but at least it won't tell you that lemons are alkaline or feed your conspiracy theories)