The Platonists turn to a rudimentary physics to argue against the Christian worldview. And yet we know that this is a false hermeneutic, both because it does not line up with the true faith and because it is disconnected with reality as we observe it.
Unbelievers try to disprove the physical resurrection by bringing up abortions (what kind of body will these murdered babies have?) or cannibalism (who gets that flesh in the resurrection). Augustine will respond to each of these, but he notes they are not questions which the pagans seriously want answered, they are simply asked out of malice.