Vapid intro paragraph
Opens with content-free throat-clearing. Restates the topic in inflated language and conveys zero new information.
What it is
A first paragraph (sometimes a single sentence) that restates the topic in inflated language and conveys zero new information. Strip it out and the response is strictly improved.
Why models do it (first principles)
The training distribution of 'helpful explanatory writing' — Wikipedia leads, blog intros, school essays — almost always opens with a topic-restatement paragraph. The model learned that responses 'should' begin this way. It is also a low-risk way to start generating: restating the prompt buys the model tokens to warm up before committing to substantive claims.
How to think about it
It is the textual equivalent of clearing your throat at the lectern. A human writer with something to say opens with the something. The model opens with the throat-clearing because it has been rewarded for sounding-like-an-essay rather than for delivering information. The intro performs 'I am about to explain' instead of explaining.
Examples
In today's fast-paced digital landscape, understanding APIs has become more important than ever. Let's dive in.
An API is a contract between two programs. Here's how REST APIs work:
When it comes to picking a database, there are many factors to consider.
Pick Postgres unless you have a specific reason not to. Reasons to deviate:
Fix prompt
Open with the substance, not with the announcement of the substance. Restating the topic before answering it spends the reader's attention on a sentence that exists only to ease you into the response. It tells them you needed runway, and runway costs them. The first sentence should already be doing the work the response is for.
Watch for
Concrete phrasings this pattern usually shows up as. These are not part of the copyable prompt. The prompt teaches the principle so the model can recognize the move even when the exact phrasing differs. Use this list to self-audit your own writing or to test a model.
- In today's fast-paced world / digital landscape
- When it comes to...
- In the realm of...
- Let's dive in
- Understanding X has never been more important
- There are many factors to consider