2 Corinthians 4: 7 "But we have this treasure in earthen vessels, that the excellence of the power may be of God and not of us..."
And the error is "of us" and not "of God" or of the things that God guarantees. Our own failures are all too obvious.
"Catholics have felt themselves quite free to speculate on this and thousand other questions since the founding of the Church, for they have always understood that strictly scientific questions are a matter of liberty, not dogma. "