Dr. Aaron G. Filler, M.D., Ph.D. studied evolutionary theory under some of the leading biologists and anthropologists of our time: Ernst Mayr, Stephen J. Gould, David Pilbeam, and Irven DeVore. A neurosurgeon at the Institute for Spinal Disorders at Cedars Sinai Medical Center and past associate director of the Comprehensive Spine Center at UCLA, Dr. Filler has been a leading innovator in medical imaging and neuroscience. He is the author of Do You Really Need Back Surgery? (Oxford University Press), as well as numerous scientific articles and patents. He resides in Santa Monica, California.