Thanks for the link.
The solidest fact is the one that is irrefutable by virtue of being independently and credibly verified. As I’m sure you’re aware, even commonly known resources on the Internet have somewhat dubious credibility. Take Wikipedia for example. It’s quick but in some areas the information is suspect because it’s posted by partisans.
At this Listverse link we have someone presenting a variety of assertions. A lot of what she claims is common knowledge but many are not. And the fact that none if it is sourced is problematic.
This claim of equal pay for example. I can’t find a reference for it anywhere else. I’m not saying that it categorically isn’t true but without verification I find it suspect. I will continue to seek independent verification because I find the assertion interesting.