Tractatus Logico-Philosophicus A Book by Ludwig Wittgenstein www.gutenberg.org The totality of factsEverything that can be saidI am my worldEthics and aesthetics are oneWhereof one cannot speak
What we have known since long A Quote by Ludwig Wittgenstein The problems are solved, not by giving new information, but by arranging what we have known since long. notetakingunderstandingproblemsinformation
The ordering of steps The ordering of steps is based on the following concept: that as each step progresses and the design is further detailed, there is an iteration with the preceding and succeeding steps but rarely with the more remote steps in the sequence...what we have is an effective fallback position that tends to maximize the extent of early work that is salvageable and preserved. Winston W. Royce, Managing the Development of Large Software Systems The rational model of design