@nerdfiles,
Having had been away for a while, and yet not fully free to use any great amount of time on line, I'd first like to acknowledge that I do hope to get back with you,
nerdfiles on another thread. For now, a question here, firstly, please.
"
Cognitive faculty," would appear to be
the key point here. I would not want to suggest, nor confess, that to be rational, or reasonable, the majority of academics would demand a certain determined level (or degree) of rational or reasonable cognitive power that each and every human brain in the world must meet.
Therefore I would argue that the former predicate of the segment, namely, "
To be irrational or unreasonable is to ignore or reject your intellectual duty or obligation; or, alternatively, to be irrational or unreasonable is to be in a shoddy or unfortunate cognitive mode or to have a cognitive defect," would have no real basis in academically minded circles--whereas the later portion would, however.
What this would seem to mean, to me, at least, then, is that for one to fulfill their intellectual duty (if we were to agree to use such a term) would simply be for them to use as much of the cognitive capacity that that brain would possess--
and we know for a fact that we'll find a fairly wide spectrum, continuum of cognitive brain states and capacites.
This much for now. There appears to be some glitch(es?) somewhere in elements leading up to the premises that the counter points you have outlined springboard from. I hope to see if I can identify those (if in fact there are actually any, or whether it is my having missed some finer points along the way), so as to verify or deny the points made. Please do give me some time, I'm loaded with a overweight 'things to do' list.