Outdated metaphysic

Truth's not a thing like any door or table
Wombat or computer or referent
Alas, perhaps, it would have been convenient —
However it is rather more unstable.
Thus it is pardonable to be confused
By the linguistic sign — even perturbed,
Though wishful thinking will make you disturbed
Or pathological — if it's abused.
So be realistic, if you sadly are
Overburdened with outdated metaphysic
Acknowledge the odd little problematic
Though you be fearful, and though it may jar
Though subtleties so far have you eluded
You may even end up quite uneluded.