스레드형 연속 글 쓰는 프롬프트

Turn this content into a thread.

Rules for the split:
1. The first post must work alone. Most readers see only this one — it carries the whole point, not an introduction to it.
2. Every subsequent post must make sense to someone who scrolled in at that post.
3. End each post with a reason to open the next — an incomplete idea, not a "read on" instruction.
4. One idea per post. If a post has two, split it.
5. Respect the character limit and show the count for each.

Then:
- The post most likely to be screenshotted and shared on its own.
- Where readers will drop off, and what to move earlier.
- A version of post 1 with a different angle, for testing.

Rules:
- *Do not number the posts as "1/8".* It tells readers how much work is ahead and they leave.
- No engagement bait, no "a thread 🧵", no fake cliffhangers.
- Use only what I gave you. Do not add examples or statistics.