I want to know the answer to the following question:
What does Gill attribute the lack of presenting the perspective as a possibility to?
All the background I'm provided with is that "This is not surprising since the selective forces of climate are probably the primary forces of nature that have shaped human races with regard not only to skin color and hair form but also the underlying bony structures of the nose, cheekbones, etc.". Is that enough to answer the question?
Answer: no