Robert Flaherty Analysis

Photography is considered to be the origin of documentary film, capturing life as it is. Usually the photos were taken of people and places documenting it.
What is unique about Robert Flaherty's footage of Nanook inside his igloo?
What Robert Flaherty did that was unique was he set up ice stacked to look like they were in an igloo, but in reality they were not. This gave him enough light to get the footage for the scene.
A documentary documents an event but what else does it convey?
A documentary documents an event but also conveys a distinct perspective on or proposal about them. It is perspective or proposal will be among many.
What four key elements form the basis for documentary film?
The four key elements of documentary film are indexical