Safety cut rope axe man In the first nuclear reactor, constructed by Enrico Fermi in 1942 under the bleachers of the University of Chicago football stadium, the control rods were held up by a manila rope. A man with an axe was told to cut the rope if the reactor got out of hand. This "safety cut rope axe man" is supposedly the origin of the term SCRAM for an emergency shutdown procedure. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape wordsacronymsenergy
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
The totality of facts The world is the totality of facts, not of things. The world is determined by the facts, and by these being all the facts. For the totality of facts determines both what is the case, and also all that is not the case.
Everything that can be said Everything that can be thought at all can be thought clearly. Everything that can be said can be said clearly. What can be put into words understanding
I am my world What we cannot think, that we cannot think: we cannot therefore say what we cannot think. In fact what solipsism means is quite correct, only it cannot be said, but it shows itself. That the world is my world, shows itself in the fact that the limits of that language (the language which I understand) mean the limits of my world. I am my world. (The microcosm.) The thinking, presenting subject; there is no such thing.
Ethics and aesthetics are one Hence also there can be no ethical propositions. Propositions cannot express anything higher. It is clear that ethics cannot be expressed. Ethics is transcendental. (Ethics and aesthetics are one.)
Whereof one cannot speak My propositions are elucidatory in this way: he who understands me finally recognizes them as senseless, when he has climbed out through them, on them, over them. (He must, so to speak, throw away the ladder, after he has climbed up on it.) He must surmount these propositions; then he sees the world rightly. Whereof one cannot speak, thereof one must be silent. What can be put into words meaning