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The Perfect Pieces in the Purple Pond - S4-E5
Continuity mistake: At the start we see 2 or 3 bits floating in the purple section of the water, camera changes to a long shot and only 1 piece is in the purple now. (00:01:00)
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The Perfect Pieces in the Purple Pond - S4-E5
Continuity mistake: The mud patterns on the therapist's chest change position after Ralph has run out. (00:16:30)
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The Perfect Pieces in the Purple Pond - S4-E5
Continuity mistake: Bones tests some liquid to determine if blood is present. She uses about 2" in the test tube. The result shows a pink hue, not red. The camera angle changes, and now there's only about 1" in the tube, and it is red, not pink. (00:31:10)
Answer: Since the palatine bone is a bone that helps form the mouth it has a lot to do with speaking. The shape of it differs a lot depending on your ethnic background. I would guess that they, in the show, meant that the person's bone tells that they were Japanese and that it was "made for the purpose of speaking Japanese." That's what I'd assume anyway. I've studied molecular biology though, so I'm not an expert on bones.