>> if asked to pick the axis/dimension least correlated with sweet, my pick would have been bitter.
I don't drink beer any more. Quite fond of Gimblett Gravels Cabernet. ;-)
>>And you are probably thinking directly about the PH scale, where alkaloids are not at the sour end
LOL. Actually I went for "contrast" or "approximate opposite" that makes the example work. The contrast between sweet and sour shares attributes with the contrast between light and...
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1
