This is a silly question.

In Windows 7/Vista when a user trying to copy multiple file, it looks like he has five options:

1. Copy and Replace
2. Don't Copy
3. Copy, but keep both files
4. Skip
5. Cancel the operation.

It looks to me that option 2 (Don't Copy) is the same as 4 (Skip). However, it's kind of strange for Microsoft to put two buttons that perform the same action. I probably miss something.

Could you please tell me what I'm missing?