Legal certainty? It was supposed to be the answer to the problems for the War Measures Act; the Constitution of Transitional Measures Act; the Emergency Powers Act; the Public Order (Temporary Measures) Act and some others I have forgotten.
I would argue that laws only mean what they are interpreted to mean by a particular governmental body at a particular time.
And you can in addition have a coherent, clear and easily interpretable body of laws and measures which result in a society which lacks many of the features of what people like to imagine is a "democracy".