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Lecture 17

PHILOS 2 Lecture Notes - Lecture 17: Face Card, Inductive Reasoning, Logical Consequence


Department
Philosophy
Course Code
PHILOS 2
Professor
Sven Bernecker
Lecture
17

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Paradox of Conrmaon 
 !"#
$%$
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/%$%$%
012)
&$324%-%55
Absolute conrmaon: -2%)*--
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Incremental conrmaon:%-%-**%*%$
%%
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75%$%324
7$-%-%*%2#
$$%8
o9:*5$5-%-$$$%$
8
1-%))%-$5%'$#$$%*%
%#2$$$%
&$.5$-%)2$$%%-
32)$4
&$+)6%-
Classicatory (qualitave) Evidence :75$$-%)2%
%-#'%$$%
o6'*%$$$;$$'$$
%-$$$%%-%< #8
1$%%-%-$$$%8
1*$$-%-%2%-
oE conrms H
Quantave Evidence: 7$-'5$%$-%)2
$$%
o6'*5$:%%;$$%$-
$%%)
&5$:*5$$%-
oThe degree of conrmaon of H on E is U
Comparave (relaonal) Evidence :75$$-%)2
%$$%$-%))'
$$%

Only pages 1-2 are available for preview. Some parts have been intentionally blurred.

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oE conrms H more than E conrms H*
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%>$$%>$8
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Instance Condion
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$%-$%$'$
o001A%)$$C-C$$
1%-3+%-;%%4
o+%-D$$%$%
1$%-'%@)%'$%%
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All As are Bs
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This A is a B
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o0%%-%-$$'%@)
0%'%@)3004%%)$
This A is not a B
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o1;%%$$2%"%%%'
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Equivalence Condion
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F#B--'%%'*-E%%%-
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R10H
R2&$$
R36$%'C%C>0C$%'C
1H%*%HF
Also if R1 is true, any non-black thing is not a raven, or as R3 puts it, is a non-raven.
%H%*%HIH%
Then some ravens are not black, contrary to R2.
1$$%'$*HI%
R1, R2, and R3 are equivalent.
%=)J
7$%$$5%'%'%E%31%%%*
$$%'%%%48
0 1$%'%%%*$%%%
 1-%%%*$-$%'%%%
C. If you do not have a big electricity bill, then you do not live in a mansion.
A 1%%%*$-;$%'%%%
6 +$5
%=)JF
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 -5$
 6$%'$%%%$5$
D. Everything that is a mammal is either a seal or a whale.
6 &$-5$$
-:$H
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