Karl Popper: Science theories are always refutable; non-scientific theories are usually non-refutable.

— TCM .. I always believed TCM is “proven” over centuries but how about lianhua qingwen? It is probably proven effective at treating symptoms but there is a different acid test on the effectiveness at treating covid infection.

— yoga .. has proven benefits, but how it helps me is very hard to prove.
The meditation part is even harder to prove.