-Economics: theory, history, the purest form of Capitalism.
-Politics: the nature of power.
-History: primarily Russian.
-Cultures: the social order.
-Music and Visual Arts.
Wait a sec...using references is BAD??!! Oh CRAP!!! O_O
I've been recently using references in my request shops because a friend said it helped with proportions...I didn't know they were frowned upon! I'm going to stop using them now and going back to the old shapes and memory deal -_-
No no no. Using references is fine (in fact I would expect most artist to use them). What's frowned upon is tracing and claiming that it's your own original work (and trying to sell it).