Nelson says that to understand and explain chiropractic science it is not necessary for us to have a preconceived notion as to how the universe is made up. In other words, a philosophy is not needed. Unfortunately, all thinking people do have a preconceived notion as to how the universe is made up and how it works and that colors their science.
Yes it is possible to sit on a two legged stool, but three legs is much steadier.