In this English lesson video, I explain to ESL learners the meaning of the word “sound” in the sense of an argument being logical and based on truth, then move on to explain validity and soundness using one of the homophobic arguments recently made by Japanese lawmaker Mio Sugita where she argues that students should not be taught about LGBT issues in school.

Watch more videos on YouTube.

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Masaki C. Matsumoto

A queer critic and YouTuber. UChicago MA dropout. My preferred pronouns are he/him/they/them. Read more

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