A philosophical work uses argumentation to advance ideas

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A work is philosophical if its ideas are supported by arguments. Arguments refer to reasonings that show how we arrived in certain conclusions that answer philosophical questions. Arguments are used to judge which among differing opinions have a better probability of being true.

References

Mabaquiao, N. (2011). Isang Paglilinaw sa Kahulugan at Kairalan ng Pilosopiyang Filipino = A Clarification in the Existence and Meaning of Filipino Philosophy. Malay, 23(2), 39–56.