Double Trouble in the Panhandle - S4-E12
Continuity mistake: Angela comes in to say she has found the twins. When she pulls up the website she opens up a pop up showing the twins. The position of the pop up changes between shots. Note the size of the banner under the pop up. (00:03:40)
Double Trouble in the Panhandle - S4-E12
Continuity mistake: In this episode we see Booth bare-chested after the hockey match. However, he has no scars on his chest where he was shot in an earlier episode. (00:03:50)
Double Trouble in the Panhandle - S4-E12
Revealing mistake: At the end, the stunt double for Bones is visible when she falls off the high wire. (00:39:15)
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.