I checked it out based on this comment. It's funny how in some ways it feels like a lazy student-assignment copied from Wikipedia: the subheadings and the structure are exactly the same as the Wikipedia article on the topic, and sometimes it even leaves in the citation numbers as normal text like a careless copy paste.
However, it also seemed less eurocentric, mentioning non-Greek non-Roman side of origins of fields where relevant, when the corresponding Wikipedia article doesn't. Wikipedia is generally pretty bad at this, but I had expected "Grokipedia" to be worse, not better in this regard!