Attempting a mind-meld with a 'skeptic mindset' -- in his imitable winnowing-out Socratic Method.
Fascinating ... the True-Disbelievers squirrelly attitude towards such matters as the O-16/-18 ratios as markers for fossil-fuel sources vs Natural CO-2 processes
-- is That SO Difficult for a std. Murican science-illiterate to grasp, when it is patiently spelled. out. ??


Ans: Yes :-/
My brain hurts

(Unfortunate too .... those antsy, petulant e-mails blowing-off-steam in the US VS THEM mode; as-if this weren't a perfectly Normal way in which homo-saps converse, privately
-- when they realize it IS: 'US' VS 'THEM'
-- in every polarized matter from ethics-free Biz brainstorms to ... [fill in blanks.])

The Rush Limbaugh Tutorial on eigenvalues and transcendental functions: as played by Felix the Cat and Tweety


And So it Goes..