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17896
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We need to know the meaning of 'and', prior to its role in reasoning [Prior,AN, by Belnap]
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Full Idea:
For Prior, so the moral goes, we must first have a notion of what 'and' means, independently of the role it plays as premise and as conclusion.
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From:
report of Arthur N. Prior (The Runabout Inference Ticket [1960]) by Nuel D. Belnap - Tonk, Plonk and Plink p.132
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A reaction:
The meaning would be given by the truth tables (the truth-conditions), whereas the role would be given by the natural deduction introduction and elimination rules. This seems to be the basic debate about logical connectives.
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17898
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Prior's 'tonk' is inconsistent, since it allows the non-conservative inference A |- B [Belnap on Prior,AN]
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Full Idea:
Prior's definition of 'tonk' is inconsistent. It gives us an extension of our original characterisation of deducibility which is not conservative, since in the extension (but not the original) we have, for arbitrary A and B, A |- B.
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From:
comment on Arthur N. Prior (The Runabout Inference Ticket [1960]) by Nuel D. Belnap - Tonk, Plonk and Plink p.135
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A reaction:
Belnap's idea is that connectives don't just rest on their rules, but also on the going concern of normal deduction.
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15201
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That Queen Anne is dead is a 'general fact', not a fact about Queen Anne [Prior,AN]
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Full Idea:
The fact that Queen Anne has been dead for some years is not, in the strict sense of 'about', a fact about Queen Anne; it is not a fact about anyone or anything - it is a general fact.
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From:
Arthur N. Prior (Changes in Events and Changes in Things [1968], p.13), quoted by Robin Le Poidevin - Past, Present and Future of Debate about Tense 1 b
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A reaction:
He distinguishes 'general facts' (states of affairs, I think) from 'individual facts', involving some specific object. General facts seem to be what are expressed by negative existential truths, such as 'there is no Loch Ness Monster'. Useful.
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20653
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Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson]
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Full Idea:
There are six 'reductive levels' in science: social groups, (multicellular) living things, cells, molecules, atoms, and elementary particles.
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From:
report of H.Putnam/P.Oppenheim (Unity of Science as a Working Hypothesis [1958]) by Peter Watson - Convergence 10 'Intro'
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A reaction:
I have the impression that fields are seen as more fundamental that elementary particles. What is the status of the 'laws' that are supposed to govern these things? What is the status of space and time within this picture?
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7999
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All actions come from: body, lower self, perception, means of action, or Fate [Anon (Bhag)]
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Full Idea:
Whatever a man does, good or bad, in thought, word or deed, has these five sources of action: the body, the lower 'I am', the means of perception, the means of action, and Fate.
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From:
Anon (Bhag) (The Bhagavad Gita [c.500 BCE], 18.14/15)
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A reaction:
The 'means of action' will presumably take care of anything we haven't thought of! Nothing quite matches the idea of 'the will' here. A twitch from the first, eating from the second, a startled jump from the third, struck by lightning from the fifth.
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7992
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The visible forms of nature are earth, water, fire, air, ether; mind, reason, and the sense of 'I' [Anon (Bhag)]
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Full Idea:
The visible forms of nature are eight: earth, water, fire, air, ether; the mind, reason, and the sense of 'I'.
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From:
Anon (Bhag) (The Bhagavad Gita [c.500 BCE], 7.4)
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A reaction:
Presumably there is an implication that there are also invisible forms. The Bhuddists launched an attack on 'I' as one of the categories. The first five appear to be Aristotle's, which must be of scholarly (and chronological) interest.
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22899
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'Thank goodness that's over' is not like 'thank goodness that happened on Friday' [Prior,AN]
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Full Idea:
One says 'thank goodness that is over', ..and it says something which it is impossible which any use of any tenseless copula with a date should convey. It certainly doesn't mean the same as 'thank goodness that occured on Friday June 15th 1954'.
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From:
Arthur N. Prior (Changes in Events and Changes in Things [1968]), quoted by Adrian Bardon - Brief History of the Philosophy of Time 4 'Pervasive'
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A reaction:
[Ref uncertain] This seems to be appealing to ordinary usage, in which tenses have huge significance. If we take time (with its past, present and future) as primitive, then tenses can have full weight. Did tenses mean anything at all to Einstein?
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7997
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Only by love can men see me, know me, and come to me, says Krishna [Anon (Bhag)]
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Full Idea:
Only by love can men see me, and know me, and come unto me, says Krishna
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From:
Anon (Bhag) (The Bhagavad Gita [c.500 BCE], 11.54)
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A reaction:
There seems to be a paradox here, as it is unclear how you can love Krishna, if you have not already seen him in some way. This is another paradox of fideism - that faith cannot possibly be the first step in a religion, as faith needs a target.
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7998
|
The three gates of hell are lust, anger and greed [Anon (Bhag)]
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Full Idea:
Three are the gates of this hell, the death of the soul: the gate of lust, the gate of wrath, and the gate of greed. Let a man shun the three.
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From:
Anon (Bhag) (The Bhagavad Gita [c.500 BCE], 16.21)
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A reaction:
Anyone who wishes to procreate, champion justice, and make a living, has to pursue all three. Wisdom consists of pursuing the three appropriately, not in shunning them. How did this bizarre puritanism ever come to grip the human race?
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