Needless artificial constraints — Mickey Mellen
Constraints on your work can be a good thing. In The Practice, Seth Godin devotes an entire section to them. Among other examples, he cites Susan Kare’s work on the original Macintosh and the amazing icons she created while under a 32×32 pixel constraint.
However, there are times when constraints seem arbitrary and unnecessary, a legacy of “that’s how it’s always been”.