http://www.sciencebasedmedicine.org/index.php/what-is-traditional-chinese-medicine/
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It may be trivially true that TCM has a long history, but it is hard to ignore that the placement of this statement at the beginning of a scientific article implies an argument from antiquity – that TCM should be taken seriously because of this long history. I would argue that this is actually a reason to be suspicious of TCM, for it derives from a pre-scientific largely superstition-based culture, similar in this way to the pre-scientific Western culture that produced the humoral (Galenic) theory of biology.
The next line is an admission that TCM is largely based on anecdotal information, described as the “precious experience” of life. This is a point that is often overlooked or not understood by proponents but central to the scientific/skeptical position – what is the value and predictive power of “precious experience” in developing a system of medicine?
I maintain that there are many good reasons to conclude that any system which derives from everyday experience is likely to be seriously flawed and almost entirely cut off from reality. Obvious short term effects, the lowest hanging fruit of observation, are likely to be reliable. Uncontrolled observation is a reasonable way to discover which plants, for example, are deadly poisons. This is likely to produce some false positives but few false negatives, which is fine for survival.
Other obvious effects, like nausea, diarrhea, and psychedelic effects are also easy to discover. Similarly it was probably obvious that people need to eat, breathe, and drink in order to stay healthy and alive. But records of pre-scientific thinking about health and disease shows that little else was.
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Can we please get back to discussing health care via the scientific method?