Answer:
I haven't seen the video but I'm guessing that poorer kids are most likely to steal things, for example money or food. From more privileged neighborhoods the kids probably has everything they need so most of them wont commit crimes.
The frets could be somewhere alongside the neck. Some diagrams are in favor of vertically oriented, rather than horizontally. But they function the same way, just turn it 90 degrees clockwise. So, the answer is fretboard diagrams can be oriented vertically or horizontally.
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