Okay... I thought that elementals were okay -- nonmagical -- and started building a world out around an elemental rock-paper-scissors triangle, but then I went to TVtropes to check out the competition. 
Whoa. 
I didn't know that it's associated with Buddhism and other Eastern religions -- but in a 4 or 5 element system, usually delving into soulpower for the fourth element. I knew that it was a classical view of science, in a way, but I didn't know it had anything to do with religions/worldviews/philosophies. 
I had learned about elements in multiple MegaMan series of games (X, Zero, ZX). Japanese science fiction game about cyborgs and robots which uses that elemental system (plus a fourth element which is outside the triangle -- Shadow) to make beating the bosses more fun. 
 
 My triangle is sky/wind/air>sea/water/ice>earth/fire/flame. Based around manipulation of weather, from a purely scientific POV. (heh, okay, I broke some laws of physics, but who cares, it's fantasy. ;D) 
So, on TVtropes, it says that while most people use it w/o meaning it to have anything to do with....creepy stuff.... there are people who do. [note: I am not recommending tvtropes. They use bad language. But the info there is rather helpful, if not hilariously cliche]
Is anybody going to notice? Is it a real problem? I thought it was just logic, like rock paper scissors.