That's not "just a simple math fail".

That's "This appeals to me so I will not question or examine and I'm forwarding this shit because it sounds smart."

I’m betting plenty of people aren’t even DOING the math. They hear someone say it or see a post and just run with it without question.

IMO it’s indicative of a far more insidious issue because more than bad math or a lack of common sense it’s a complete lack of critical thinking. You have to try to fail and frankly I don’t think people are trying at all when it comes to spreading this sort of misinformation. I’m sure there are plenty of people who see it, agree, take a second look, and realize their error and that’s simple human error.

But when people see it, don’t bother to do the math, spread it, and refuse to accept that they made a mistake in their math (or lack of) or didn’t bother to check the information before spreading it? That’s far more than a math fail.

***for the record, I'm not saying this particular bit of misinformation is something massively detrimental to society, but I am saying it's a microcosm of the general mentality that spreads this sort of thing.