Hangul is an exception to many similar "historically true" patterns mostly because it was created so late. Hangul is more a single person's well-educated effort

Hangul is an exception to many similar "historically true" patterns mostly because it was created so late. Hangul is more a single person's well-educated effort, not something that emerged over time from various local customs. The castle I grew up near is easily 150+ years older than Hangul.