Theories (actually, hypotheses) are tested in experiments to see if they have any validity. Homeopathy has been tested, and so far the results are negative.
But experianced by well existing......people since long & found as effective by them.
Gibberish.
Do you mean to say that differant theories can't have its both good & bad points?
More Gibberish. Modern medicine, and scientific knowledge in general, does not depend on one human. It is the accumulated knowledge of generations of scientists, each generation building upon the last, or correcting it. How much has Homeopathy changed since Dr H? Or tissue salts since Dr. S?
Carry forward of any system to next generation means approval by previous generation. If any theory of any system is not changed, corrected or amended, it may mean that was found appropriate. I can't say about Dr.H work, but Dr.S work runs parllel to body's biochemistry, so can't be changed, amended or corrected till our body's biochemistry changes. However, additions & changes in potencies can be possible to it as per the need of time.