An anthropologist would be writing from their outside perspective, what they observed while being with the indigenous people. Though they may attempt to be unbiased, there will always be some level of personal bias in writing. An elder of the indigenous group would be writing from their own perspective as someone who is a lifelong member of that group. They would also have a bias, whether intentional or not. An autobiography tells about the authors experience and their life. Though an anthropologist may have experiences being immersed in the culture of the community, they can still never know what it is like to actually be a part of the community naturally.
