In the excerpts below, notice how Liccione retroengineers Catholicism is the same way that Darwinians retroengineer evolution.
Evolution is a "fact." Hence, there must be an evolutionary pathway from here to there. Therefore, we can postulate any just-so story to arrive at our desired destination.
And the theory is unfalsifiable because we can always introduce enough ex post facto adjustments to harmonize the evidence with the theory. Whatever zigzag direction it takes, be it backwards, forwards, or sideways, is consistent with the deposit of faith.
Far from representing the “faith once delivered,” what Liccione has given us is just a piecemeal, philosophical construct.
“It is not important to fix the precise times when one could say, from a scholarly standpoint, that the conditions had been met for such doctrines to have been infallibly taught by the OUM alone. If the doctrines in question are de fide, which they are, then something logically equivalent to them was always taught infallibly by the OUM; if that were not the case, then substantive addition to the deposit of faith would be occurring over time, which nobody is willing to allow. The ‘development’ consists in coming to see this over time, when it was not fully explicit at first to those who were in fact exercising the charism of infallibility.”
“As I've already implied, the entire deposit of faith has been infallibly taught by the OUM from the beginning. If the dogmatic pronouncements of the infallible ‘extraordinary’ magisterium were always necessary for the exercise of infallibility, then nothing was taught infallibly before the first ecumenical council--a consequence unacceptable for all sorts of reasons, one of which is that it is ultimately incompatible with the very idea of a ‘faith once delivered’ in its entirety. And so, e.g., the assertoric content of the confessions of faith contained in ‘the Apostles' Creed’ were infallibly taught by the OUM all along. Nobody disputes that; the question always is what the relevant affirmations mean, exactly; and such questions are settled over time by the Magisterium.”