Earlier quoted context omitted.
Be careful not to jump the gun here. The vast majority of fact checking exists to call out stuff that's demonstrably false, and it's to their credit that social media platforms link a refutation. But when you have a huge number of stories, there are going to be edge cases, and BMJ got snared by one here. As I understand it: BMJ found legit problems with one vaccine's clinical trial. But this kind of thing gets seized…
I’m not sure about the prevalence but one major peeve of mine is when someone states, X is ten meters high. Fact check: Wrong, X is 9.6 meters high. It takes away credibility.
This statement "We did not even have a federal income tax in this country until 1913." was rated "mostly true"[0]
While this one "the U.S. federal income tax rate was 0 percent until 1913." was rated "half true"[1]
What more evidence do you need that this whole thing is sort of arbitrary?
[0]https://www.politifact.com/factchecks/2015/aug/24/jim-webb/j...
[1]https://www.politifact.com/factchecks/2012/jan/31/ron-paul/r...