"leaky in the sense of leaky bladders but also in the sense of leaky memory"
Adler makes a point: Any game excludes people. Every design decision excludes people. The impulse is "exclude no one" but this impulse is wrong, impossible. The question you *should* ask is: Is this game excluding *the same people who every game tends to exclude*? *That* would be wrong.
This point generalizes beyond games. This sort of choice (or attempt to deny the choice) comes up in designing any human thing.
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