序論

1. Origins, structure, and basic meaning

• Structure: 序論（じょろん） means the introduction that presents a text's topic, purpose, or background.
• Basic usage: Use it for the opening section of a research text or paper and its organization.

2. Common pitfalls and similar expressions

• Opening versus closing an argument
  • 序論 presents the questions to be addressed; 結論 summarizes the judgments or main points reached through the discussion.