I gotta admit, I'm curious about the how and the why. Alas, I figure most of those readability checker things are at best reluctant to explain themselves.So, this made me wonder about other things we take for granted.
A readability checker that uses various formulas judged your post* as being a 10th grade reading level. Is writing at too high a reading level, especially on a sight with folks from different nations, almost gatekeeping of a sort?
* Well, two copies of it to get to the minimum number of words.