Identify and explain any fallacies of defective induction or of presumption in the following passages:

There is no surprise in discovering that acupuncture can relieve pain and nausea. It will probably also be found to work on anxiety, insomnia, and itching, because these are all conditions in which placebos work. Acupuncture works by suggestion, a mechanism whose effects on humans are well known.
The danger in using such placebo methods is that they will be applied by people inadequately trained in medicine in cases where essential preliminary work has not been done and where a correct diagnosis has not been established.
—Fred Levit, M.D., “Acupuncture Is Alchemy, Not Medicine,” The New York Times , 12 November 1997