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4.2 The sense of a proposition is its agreement and disagreement with the possibilities of the existence and nonexistence of the atomic facts.
 
In the village of Trattenbuch where he takes his first elementary school teaching post, Ludwig Wittgenstein is most often remembered in the way Frau Bichlmayer tells it:

"I was in the office when the steam engine went dead and the factory had to stand idle. And then a lot of engineers came, who couldn't get the engine to go. Back at home I told my husband what had happened and my husband then told the story in the school office and the teacher Wittgenstein said to him: Could I see it? Could you obtain permission for me to take a look at it? Then my husband spoke to the director who said yes, he could come straight away. So then he came with my husband and went straight down into the engine room and began walking around, saying nothing, just looking around. And then he said: Can I have four men? The director said: Yes. And four came, two locksmiths and two others. Each had to take a hammer and then Wittgenstein gave each of the men a number and a different place. As he called they had to hammer their particular spot in sequence: one, four, three, two. In this way they cured the machine of its fault."

For this Wittgenstein is rewarded with new linen. He first refuses to take it, then accepts on behalf of the poorer children in his school. But the villagers already have names for him: "weird" or "rich baron." Among themselves they ask: why does a man of wealth and culture choose to live among the poor?