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All the ideas for 'Brain Bisection and Unity of Consciousness', 'Precepts for Advancing Science and Arts' and 'fragments/reports'

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4 ideas

13. Knowledge Criteria / D. Scepticism / 6. Scepticism Critique

19392	I don't recommend universal doubt; we constantly seek reasons for things which are indubitable [Leibniz]
	Full Idea: I do not think it necessary to recommend to people universal doubt ...in fact, we are constantly seeking reasons for thoughts about which there is no doubt at all.
	From: Gottfried Leibniz (Precepts for Advancing Science and Arts [1680], p.34)
	A reaction: Such confidence is, of course, asking for trouble. I prefer Peirce's fallibilism - that robust realism is the most coherent view, and the only one worth pursuing and relying on, but you never know....

15. Nature of Minds / A. Nature of Mind / 2. Psuche

5880	Xenocrates held that the soul had no form or substance, but was number [Xenocrates, by Cicero]
	Full Idea: Xenocrates denied that the soul had form or any substance, but said that it was number, and the power of number, as had been held by Pythagoras long before, was the highest in nature.
	From: report of Xenocrates (fragments/reports [c.327 BCE]) by M. Tullius Cicero - Tusculan Disputations I.x.20
	A reaction: This shows how strong the Pythagorean influence was in the Academy. This is not totally stupid. Dawkins holds that the essence of DNA is information, which can be expressed mathematically. Xenocrates was a functionalist.

15. Nature of Minds / A. Nature of Mind / 5. Unity of Mind

2957	Brain bisection suggests unity of mind isn't all-or-nothing [Nagel, by Lockwood]
	Full Idea: Nagel argues (because of brain bisection experiments) that we should jettison our commonsense assumption that the unity of consciousness is an all-or-nothing affair.
	From: report of Thomas Nagel (Brain Bisection and Unity of Consciousness [1971]) by Michael Lockwood - Mind, Brain and the Quantum p.84
	A reaction: It seems wrong to call it 'commonsense'. It is an assumption that precedes any judgement, but if you rapidly grasp that your mind is in your brain, it becomes common sense that you can cut lumps out of your mind.

16. Persons / B. Nature of the Self / 4. Presupposition of Self

3285	We may be unable to abandon personal identity, even when split-brains have undermined it [Nagel]
	Full Idea: As a result of the evidence of split-brains, it is possible that the ordinary, simple idea of a single person will come to seem quaint some day, …but we may be unable to abandon the idea, no matter what we discover.
	From: Thomas Nagel (Brain Bisection and Unity of Consciousness [1971], p.164)
	A reaction: I'm not sure what grounds you can have for a claim that we can't abandon our current view of selves, even when the new reality will be utterly different. Rather conservative? I would expect future concepts to roughly match future reality.