I like this answer, but it would be more compelling if a concrete case of planning and execution over a long time frame could be cited. The kind of concrete exa

I like this answer, but it would be more compelling if a concrete case of planning and execution over a long time frame could be cited. The kind of concrete example I'm talking about is, "We set out to build x or reduce y, over 300 years and it took us 450, but it's done.".