Important fact about the waterfall model, that no-one ever talks about: The authors thought it was important to actually do it twice [0]. Of course, nobody in

Important fact about the waterfall model, that no-one ever talks about: The authors thought it was important to actually do it twice [0]. Of course, nobody in the big corporate/government world wanted to pay a second time for work that has already be done, so most of the projects failed and continue to fail. [0] https://en.wikipedia.org/wiki/Waterfall_model#Royce's_final_model https://en.wikipedia.org/wiki/Waterfall_model#Royce's_final_...