Get up to speed on an unfamiliar topic

Topic: {{topic}}
My job, and why I need to understand this: {{role_and_reason}}
What I already know about it: {{current_knowledge}}
Where I will use what I learn: {{use_context}}

Task:
Write a briefing that takes me from knowing little about this topic to being able to follow an expert conversation, ask good questions and notice when someone is overselling. I am new to the field, not new to work, so skip the obvious and explain the parts that trip up newcomers.

Format, with these headings:
1. The short version: one paragraph on what it is, why it matters now and who deals with it.
2. Key ideas: 5 to 7, in the order a newcomer should learn them, two or three sentences each.
3. Terms you will hear: 8 to 12 terms, each with a one-line plain definition. Say when a term is used loosely or means different things to different people.
4. Where people disagree: 2 to 4 open debates, with the main positions stated fairly and without picking a winner.
5. Good questions to ask: 5 questions for an expert, vendor or colleague that show I have done my homework.
6. What to read next: the kinds of sources worth finding (for example a standards body, an industry association's guidance, an introductory textbook or official documentation) and the search terms that will find them.
7. Check before you rely on this: the specific points above that are most likely to be out of date, or to differ by country, industry or organization.

Requirements:
- Under 900 words, in plain language. Define each piece of jargon the first time it appears.
- You are working from general knowledge, which has a cutoff date and can be wrong. Do not give statistics, market sizes, recent events or quotes unless they are well established, and mark any you do give with "(verify)".
- Name a specific report, book, article, website or person only if you are confident it exists and is relevant; otherwise describe the kind of source instead. An invented source is worse than none, because I may repeat it.
- If the topic changes quickly (regulation, technology, prices), say so in the first paragraph.

The briefing should be enough for me to hold my own in {{use_context}}: for example, I should know which two or three questions separate real expertise from repeated marketing claims.

If the topic name means different things in different fields, say which meaning you chose based on my job and list the other meanings in one line. If you do not know enough about the topic to brief me reliably, say so plainly rather than filling the gaps.