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Software engineers are facing an 'identity crisis bordering on depression,' Menlo Ventures partner says
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
Your best guess is reasonable, I may have misremembered, it could have been A' spoken as A dash and meaning the complement and I hallucinated the negative but I think I recall some noted confusion with the reciprocal x-¹ = 1/x.
Yeah, to me,
A'checks out since that would meanNOT Awhich I believe was what you were getting at.