A good test of a design principle:
I think it was from Cennydd that I heard about a really good test of a design principle: is it reversible? In other words, could you imagine the exact opposite of the design principle being perfectly valid in a different organisation or on a different project? If not, then the principle may be too weak to be effective. […] “Make it easy to use” would be an example of a weak design principle. It’s hard to imagine a situation where “make it hard to use” would be a reasonable guiding principle.