Continuous improvement is not just a good idea, but a law of Nature. However, the default form is blaming others, and this is much easier than any other form of improvement. The popularity of polemics is based largely on people trying to jackknife themselves into a position of being a recognized critic, this being the shortcut to a comfortable standard of living. Landlords especially are inclined to taking this shortcut. And the French Revolution, promoted as a big improvement, was a major case of blaming others. Blaming others usually has some solid basis to it, and so is difficult to refute in real time, but history always shows later the creative paths that could have been taken instead. Thus the significance of the advice to get out of your comfort zone is often to abandon this shortcut and get on with the real work.