outside and inside the box

Generally, "the outside the box" means creative thinking and or a new way from the different perspective, but according some scientist's experimental test, the people in a dark box may have more creative think.

similarly, recent days I noticed that the people in the easy emotion do not have the more efficiency than those in the bad emotions, based on an article of FT.com. those event make me review the things around me from the concrete and practical view. first of all, our goal is making the things works well. and the real rules is the essence.