I was in middle school the last time I took a Spanish class. I remember enough for toddler talk — phrases like “Donde está el baño?” and “mi gato es muy gordo” — but having a meaningful conversation in Spanish without a translator is out of the question. So I was genuinely surprised the other day when, thanks to the Ray-Ban Meta smart glasses, I could have a mostly intelligible conversation with a Spanish speaker about K-pop. Live translations were added as part of a feature drop last month, alo...