To set or mark the boundaries or limits of something clearly and precisely. In academic work, it involves establishing clear distinctions between concepts, theories, or areas of study.
From Spanish demarcar (de- 'off' + marcar 'to mark'), originally used for marking territorial boundaries. The concept transferred from physical boundary-marking to intellectual boundary-setting in scholarly discourse.
Demarcation is like drawing intellectual property lines - you're saying 'this concept ends here, and that one begins there!' What's powerful is that good demarcation doesn't just separate things; it actually helps us understand what makes each thing unique and valuable in its own right.
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