The Glowing Bones in the Old Stone House - S2-E20
Visible crew/equipment: At the start as Bones says about how Angela turned Hodgins down, there is a clear shot of Bones' top and a microphone visible just inside it. (00:01:00)
The Glowing Bones in the Old Stone House - S2-E20
Continuity mistake: When speaking to the husband in the kitchen and saying about going over the books, the husband has his hand up to his head in one shot and lowered in the immediate following shot. (00:18:30)
The Glowing Bones in the Old Stone House - S2-E20
Visible crew/equipment: When Booth is in the kitchen at Carly's talking to the husband who is going over the books of the restaurant, a tape marker is visible. (00:18:30)
The Glowing Bones in the Old Stone House - S2-E20
Revealing mistake: When Booth does the U-Turn after working out who the killer is, In the clip of the SUV turning you can see skid marks on the road from previous takes. (00:37:00)
The Glowing Bones in the Old Stone House - S2-E20
Continuity mistake: When Abby is found out, she has her arms waving in desperation in one shot but not in others. (00:38:00)
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.