Good find Bee. I came across that in my Discord Supermemo group I run. I think the idea was that your brain has to expend more effort with understanding what the text says, and this is correlated with better retention. It is like the brain uses more horsepower in the interpretation and so this triggers more neural connections. At least that is my layman's idea of it. (Sexist term, "layman's". Call it Sans Sexista if you prefer.
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