Anthropologist: All music is based on a few main systems of scale building. ████████ ██ ███ ██████████ ██ █ ███████ █████ ████ █ ██████ ██ ██████ █████████████ ██ █████ ███████ █████ ███ █████████ ██ ██████ ████████ █ ███████ ███████ ██ ████████ ███ ███████████ ██████ ██ ███ ███████ ██████ ███ ████████ ██████ ████ ██████ █████████ ███ █████ ██ ████ ██ ███ ██████ ██████████ ███ ██████████ ██ ████████ █████ ███ ██ ██████████ ████ ██ ██████ ████████████ ██ ███ █████ █████
The anthropologist hypothesizes that human nature alone explains the widespread popularity of diatonic music. He supports this by saying that if musical popularity was based on social conditioning, we'd expect to see a mix of diatonic and nondiatonic scales in music across different cultures. However, diatonic scales have always been the dominant type of music worldwide.
The anthropologist offers two possible explanations for the popularity of diatonic music: human nature (or “innate dispositions...”) and social conditioning. He then assumes that if social conditioning alone can’t explain its popularity, then human nature must be the sole explanation. He ignores the possibility that human nature and social conditioning could explain it together, or that some other factor might also be involved.
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