For you and ErrantX, I think you're reading too much into my parallel: I was just replying to a statement made in the parent. Obviously I'll expect that someone making changes to my code is qualified to do so. It's presumably parallel for interactions between multiple designers on the same project – one can make reasoned changes to the other's work.

In the described event, there clearly wasn't communication but we don't really know anything more about it.

Here's a question, though: let's say you're designing something, say a logo, and there's been a fairly clear idea/requirements laid out, there's some sort of a feedback loop etc. Do you at some point settle on a finished work that you'll offer up and that's it? Or if the client keeps asking you to add more ninjas and make that T red &c., will you acquiesce whether or not it works for you?

Edit: or if there's a second designer who has a slightly different idea of how the finished work should look, how is that resolved?