How does Philo of Megara’s account of conditionals resemble modern material implication?

Philo of Megara’s account of conditional propositions aligns with the modern concept of material implication because of how he defined their truth conditions.12

For Philo, a conditional statement "If p, then q" is considered true if and only if it does not currently have a true antecedent (p) and a false consequent (q). This mirrors the modern truth-functional definition, where a conditional is false only when the antecedent is true and the consequent is false.12

A key distinction between Philo and his contemporary Diodorus Cronus is that Philo allowed the truth value of a conditional to change over time. While Diodorus argued that a conditional must be true for all time if it is to be true at all, Philo’s interpretation focuses on the present state of the propositions, making his view a direct precursor to the modern logical understanding of material implication.12