Since the issue was raised, I think it deserves comment.
Genii or geniuses ?
If one wants to give the impression of vast intelligence or erudition, then they will choose genii. But the key word is IMPRESSION.
At best it indicates that one has a knowledge of Latin roots. At worst, it makes one a tedious pedant, which is far different from erudite or vastly intelligent.
If one were referencing Roman or Arabic mythology, then genii would be appropriate. Also references to guiding spirits at birth or death would necessitate the same.
When octopus becomes octopi and focus becomes foci in common usage, then will genii make sense.
But Latin is a dead language whereas English is living and ever changing so we take our guidance from institutions contemporary to us which have a reputation for upholding standards of excellence.
Most of us are at least tangentially familiar with the annual MacArthur grants, often referred to as the “Genius Awards”.
So, I prefer to take my cues on proper English from such venerable institutions as The New York Times and others who make reference to the MacArthur Geniuses (NOT the MacArthur Genii).
Others in the company of The Old Gray Lady include Britannica.com, Slate, and Brown University Watson Institute for International Studies, all of whom reference the MacArthur GENIUSES.
Obviously there are others too numerous to cite. I just picked the cream of the crop.
So, the inevitable conclusion I would reach is that if I truly wanted to be erudite, I would follow their collective example.
If I would be content to merely give the APPEARANCE of being erudite, I would settle for genii, despite any snickerers out there. They don’t know Latin roots, after all :)
As for me, I prefer The Times. There really aren’t any dead Romans around anymore to appreciate genius and all its distinctions.
:)