The machine shelves look-alikes together in a giant warehouse. Pick an example, walk to its shelf-mates, and find where the model's sense of 'alike' stops matching yours.
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Switch the feature lens and watch which things the model considers close together change.
Select an example and read what the model shelved right next to it.
Find the pairs the model calls similar that you wouldn't — representation is not neutral.
Before switching lenses, predict what should sit next to your example.
Change the lens only; keep the same example selected.
Which neighbors appeared or vanished when the lens changed?
Say which feature the model leaned on, and what it ignored.