Uhrenfunktion - Zwei Uhren / Two Clocks

Uhrenfunktion - Zwei Uhren / Two Clocks
Zeigt eine stehengebliebene Uhr zweimal am Tag die richtige Zeit an?

Lewis Carroll –

Fred Dretske –

Marie von Ebner-Eschenbach –

Karl Valentin

Zeigt eine stehengebliebene Uhr zweimal am Tag die richtige Zeit an?
Lange war ich der Meinung: "Ja", doch nun bin ich überzeugt: "Nein". Bildet euch selbst ein Urteil.

The Two Clocks
Which is better, a clock that is right only once a year, or a clock that is right twice every day?
'The latter,' you reply, '"unquestionably.' Very good, now attend.
I have two clocks: one doesn't go at all, and the other loses a minute a day: which would you prefer? 'The losing one,' you answer, 'without a doubt.' Now observe: the one which loses a minute a day has to lose twelve hours, or seven hundred and twenty minutes before it is right again, consequently it is only right once in two years, whereas the other is evidently right as often as the time it points to comes round, which happens twice a day.
So you've contradicted yourself once.
'Ah, but,' you say, 'what's the use of its being right twice a day, if I can't tell when the time comes?' Why, suppose the clock points to eight o'clock, don't you see that the clock is right at eight o'clock? Consequently, when eight o'clock comes round your clock is right.
'Yes, I see that,' you reply.
Very good, then you've contradicted yourself twice: now get out of the difficulty as best you can, and don't contradict yourself again if you can help it.
You might go on to ask, 'How am I to know when eight o'clock does come? My clock will not tell me.' Be patient: you know that when eight o'clock comes your clock is right, very good; then your rule is this: keep your eye fixed on your clock, and the very moment it is right it will be eight o'clock. 'But—,' you say. There, that'll do; the more you argue the farther you get from the point, so it will be as well to stop.
Lewis Carroll: ca. 1850 In: The Rectory Umbrella, M.S. First published 1898.

Lewis Carroll, eigentlich Charles Lutwidge Dodgson, englischer Schriftsteller und Logiker,
27.1. 1832 Daresbury (County Cheshire) – 14.1. 1898 Guildford; lehrte 1855-81 Mathematik an der Universität Oxford; berühmt durch seine teils grotesken, teils spielerisch die Logik verletzenden Romane:
1865 Alice im Wunderland; 1871 Alice im Spiegelreich

The Lewis Carroll E-text Collection
Sekundärliteratur
Dieter Stündel: Charles Lutwidge Dodgson alias Lewis Carroll. Poet zwischen Mathematik und Fotokunst. Siegen: Machwerk, 1986. 278 Seiten.

	Bei Amazon nachschauen
Thomas Kleinspehn. Lewis Carroll. Rowohlt 1997. Broschiert, 154 Seiten

Zum Thema der Philosoph Fred Dretske:
"If a fuel gauge is broken (stuck, say, at »half full«), it never indicates anything about the gasoline in the tank. Even if the tank is half full, and even if the driver, unaware of the broken gauge, comes to believe (correctly, as it turns out) that the tank is half full, the reading is not a sign—does not mean or indicate—that the tank is half full. Broken clocks are never right, not even twice a day, if being right requires them to indicate the correct time of day.
Fred Dretske: Explaining Behavior. Cambridge, Mass. 1988. S.56

“Auch eine stehengebliebene Uhr zeigt zweimal am Tag die richtige Zeit an.
So kann sie im Laufe der Jahre auf eine nicht endenwollende Reihe von Erfolgen verweisen.”
Marie von Ebner-Eschenbach; vielleicht kannte sie Lewis Carrolls "Two Clocks".

Hier war ein kurzes Zitat von Karl Valentin. Die Enkelin des Künstlers Anneliese Kühn will Karl Valentin hier öffentlich nicht sehen / lesen. Das Zitat wurde daher am 20. Juli 2005 entfernt.

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