Mark Crutchfield quotes:

For the New Age community, 'ancient' knowledge is always considered unimpeachable and unimprovable, just as a diverse range of beliefs from Eastern mysticism to UFOs, energy dowsing to cryptozoology, are - though mutually contradictory - unquestionably accepted in the name of open-mindedness.

Tailing someone is like maintaining a relationship: you keep at it until they give you the slip, or until they confirm everything you suspect them of.