No. /posts/18 will always refer to the same post. Post 18 will never show up on another url. And no other post will show up on 18. You may delete it but intenti

No. /posts/18 will always refer to the same post. Post 18 will never show up on another url. And no other post will show up on 18. You may delete it but intentionally deleting something because it needs to be gone is not about what this post is talking about.