Yes and this also applies to other things like videos.
I'd be curious what others think about this:
If you see a video on YouTube and choose to click it, you as the viewer already know the title of the video and have seen the thumbnail. Those things together gave you enough detail to be interested.
The first 15 seconds of the video probably doesn't need to repeat what you already know.
But on the other hand, outlining what you're about to see in the video doesn't seem like a bad idea so folks know what they're getting into.
As someone who has made hundreds of videos and have seen thousands, whenever I hear someone explain what I already know I'm immediately put into a state of "cool story, give me the information I clicked to see".
Does anyone else feel the same?