Musicians who are auditioning for a spot in an orchestra are typically placed behind a screen when they play for the judges. In scientific terms, what is this practice trying to avoid?

So that factors like race and gender wouldn't influence judges decisions

A  documentary film  is a nonfictional motion picture intended to document some aspect of reality, primarily for the purposes of instruction, education, or maintaining a historical record.example: farenheit 911

Riffin tells a story about photographing elephants in a wildlife sanctuary in africa. he says that the photographer brought back more than just an amazing story.