> With a complex enough problem, that doesn't work as well as you imply. No, the approach of breaking down a problem into smaller manageable pieces and attacki

> With a complex enough problem, that doesn't work as well as you imply. No, the approach of breaking down a problem into smaller manageable pieces and attacking each piece separately in the same manner is universal. This of course will be guided by one's prior knowledge, experience and techniques to manage Risk. See for example the classic; The Spiral Model of Software Development - https://en.wikipedia.org/wiki/Spiral_model https://en.wikipedia.org/wiki/Spiral_model > Which is the reason why re-implementations ... because the second time around, the architecture is informed by the experience of implementation. True; but you don't get to do a re-implementation every time. Hence one has to evolve the system architecture carefully with the the same approach mentioned above.