There is an interesting phenomenon I have come across several times when working with groups, and that is the need some people have to make changes to a solution that someone else created.
The change is often superficial or doesn't substantively change the solution, however the person making the suggestion is often adamant that the change is vital.
In a question on the User Experience SE, some comments were made about how to plan for and mitigate this:
People are natural complainers. So next time you present a design make sure there are 1 or more subtle defects you're sure they notice. They'll complain about those, you say ok and fix them. if you present a perfect design, they'll still find stuff regardless.
That reminds me of the Battle Chess duck - It was well known that producers had to make a change to everything that was done. The artist working on the queen animations came up with an innovative solution. He did the animations for the queen the way that he felt would be best, with one addition: he gave the queen a pet duck. He took great care to make sure that it never overlapped the "actual" animation. Eventually, it came time for the producer to review the animation set for the queen. His comments, "that looks great. Just one thing - get rid of the duck."
Is this a known phenomena in Cognitive Sciences?
It seems to indicate a need/desire on the part of the person making the suggestion to exert some control over an external process but I wonder if it is more elemental/basic than that?