a. Yoga, defined here, following Patanjali, as the cessation of the fluctuations of the mind
b. The above, a loose treatment of Patanjali's 'compiled' outline of the approach towards a.
c. Re 6. What constitutes a 'worthy' focus of attention is no doubt itself a worthy focus of attention, for a time.
d. What I seem to be clumsily aiming for here is a presentation of Patanjali's Yoga 'compilation' as non culturally specific, something we can recognise as present or available in some guise in whatever culture we derive from, yoga as speaking to the human condition as it were.