I work at a morning newspaper. The pages are sent to the press about 2 a.m. in the morning and the paper is shipped out several hours later. Yet we still get calls like this:
This is about 10 a.m.
Person: Hi, I need to get a brief in the paper about X event.
Co-worker: OK, you can fax or e-mail it to us, or give me the details now. When is it?
Person: 6 p.m. tonight
Co-worker:

Um, we can't get it in the paper, the paper is done already.
Person: You can't just wedge it in someplace? It doesn't matter where it is.
Co-worker: No, the paper is done and printed. It's on the stands and being delivered to homes already.
Person: You can't call it back and just get this in for me?
Co-worker: !!??
And then there are the conversations I've had with otherwise intelligent editors who just don't understand basic space issues.
Editor: OK, we need to put the XYZ story on 6A.
Me (checking since that reporter is notorious for writing epics): Um, well, it looks like that story is about 40 inches and there's art, right? There are a ton of ads on 6A and I'd say there's about 20 inches, tops.
(The editors do have the print-outs that show the spacing.)
Editor: Well, it needs to go there, there's nowhere else to put it.
Me: OK, then it's going to need to be cut quite a bit, and we can't run the art.
Editor: No, it's a really good story and the art's great.
Me: OK, but it won't fit there if it's not cut.
Editor: Can't you just squeeze it in?
Me: ?!? No. (Not if you want it to be legible, anyway ...

)
I've had experience on both sides, so I probably understand this better than most .. but really ...