Modern classical music is music written in the 20th century and beyond. Although much of it draws heavily on earlier forms, modern composers also experimented with rejection of long-held ideas; notably, Arnold Schoenberg questioned the traditional notions of harmony with his twelve-tone system[?], and John Cage questioned the very definition of music with his use of chance and found sounds.
... e.g. herbal medicines, do not have these side effects -- they have no effect.
Distrust of conventional medicine. Conventional medicine does not have a clean history ...