[annalex]

Both sola Scriptura and the Scripture/tradition position are objectively unprovable

The ability of the Church to refine, define, and explain the Christian faith are scriptural and historical facts. Sola Scriptura is not.

[Wallace T.]

The greater antiquity of the doctrine of transubstantiation (Fourth Lateran Council in 1215) vs. the Calvinist doctrine of spiritual presence (Westminster Confession in 1648) does not mean that the former is correct. The Catholic doctrine is conceivably more reasonable than the Calvinist one, based on historic precedents of the ancient church and the writings of the church fathers rather than a rejection of the precedents. However, neither doctrine, nor other positions (consubstantiation as the Lutherans believe, for instance) are objectively provable. Can it be tested or measured? Is it an historical event, like Napoleon invading Russia or the explosion of Mt. Vesuvius in the first century AD?