abstruseness

The abstruseness of the contest winners’ writing is deceptive.

His books succeed both as narratives and as arguments about our organic selves, holding steady between the Scylla of abstruseness and the Charybdis of reductiveness.

The logical management of the syllogism involves much abstruseness respecting 'genus' and 'species,' the 'quantity' and 'quality' of 'propositions', 'contraries,' 'sub-contraries,' 'contradictions,' and 'subalterns.'

If abstruseness is your subject – and it's hard to find any other for C – you have to get it right.

But abstruseness is a quality appertaining to no subject per se.