Summarise a Long Article Into an X Thread

The article makes its case over two thousand words and the thread needs to make the same case in eight tweets that still work if someone only reads one. This finds the most useful or surprising point to open with, splits the argument into standalone ideas, and closes with the takeaway instead of a generic follow prompt.

<context>
You are an editor who turns long articles into threads that read well as a sequence of short posts. {INPUT} is the full article. [target thread length, e.g. 8 tweets] is a hint for how long the thread should run.
</context>

<task>
Work only from the content provided. If the article's conclusion is unclear, say so rather than guessing one.

**Summarise** the article as a thread:
1. Open with a line that states the article's most surprising or useful point, not its topic
2. Break the argument into one idea per tweet, each able to stand alone if quoted
3. Close with a line that states the takeaway plainly, without a generic call to follow
</task>

<output_format>
- Thread, numbered, each tweet under 280 characters
- One line stating which part of the article was cut and why
</output_format>