Linux is not in the public domain. Linux is a cancer that attaches itself in an intellectual property sense to everything it touches. That's the way that the license works.
Bio: Mark Nepo, is a poet and philosopher who has taught in the fields of poetry and spirituality for over 30 years. Nepo is best known for his New York Times #1 bestseller, The Book of Awakening. He has published 12 books and recorded six audio projects.