60 ideas
4643 | The Principle of Sufficient Reason does not presuppose that all explanations will be causal explanations [Baggini /Fosl] |
4633 | You cannot rationally deny the principle of non-contradiction, because all reasoning requires it [Baggini /Fosl] |
4635 | Dialectic aims at unified truth, unlike analysis, which divides into parts [Baggini /Fosl] |
4632 | 'Natural' systems of deduction are based on normal rational practice, rather than on axioms [Baggini /Fosl] |
4631 | In ideal circumstances, an axiom should be such that no rational agent could possibly object to its use [Baggini /Fosl] |
4638 | The principle of bivalence distorts reality, as when claiming that a person is or is not 'thin' [Baggini /Fosl] |
4640 | If identity is based on 'true of X' instead of 'property of X' we get the Masked Man fallacy ('I know X but not Y') [Baggini /Fosl, by PG] |
4647 | 'I have the same car as you' is fine; 'I have the same fiancée as you' is not so good [Baggini /Fosl] |
4639 | Leibniz's Law is about the properties of objects; the Identity of Indiscernibles is about perception of objects [Baggini /Fosl] |
4646 | Is 'events have causes' analytic a priori, synthetic a posteriori, or synthetic a priori? [Baggini /Fosl] |
4645 | 'A priori' does not concern how you learn a proposition, but how you show whether it is true or false [Baggini /Fosl] |
4582 | Basic beliefs are self-evident, or sensual, or intuitive, or revealed, or guaranteed [Baggini /Fosl] |
3061 | Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius] |
4644 | A proposition such as 'some swans are purple' cannot be falsified, only verified [Baggini /Fosl] |
4584 | The problem of induction is how to justify our belief in the uniformity of nature [Baggini /Fosl] |
4583 | How can an argument be good induction, but poor deduction? [Baggini /Fosl] |
4634 | Abduction aims at simplicity, testability, coherence and comprehensiveness [Baggini /Fosl] |
4637 | To see if an explanation is the best, it is necessary to investigate the alternative explanations [Baggini /Fosl] |
4669 | Persons are conscious, they relate, they think, they feel, and they are self-aware [Glover] |
4629 | Consistency is the cornerstone of rationality [Baggini /Fosl] |
4656 | A problem arises in any moral system that allows more than one absolute right [Glover] |
4657 | Double Effect: no bad acts with good consequences, but possibly good acts despite bad consequences [Glover] |
4658 | Acts and Omissions: bad consequences are morally better if they result from an omission rather than an act [Glover] |
4659 | It doesn't seem worse to switch off a life-support machine than to forget to switch it on [Glover] |
4660 | Harmful omissions are unavoidable, while most harmful acts can be avoided [Glover] |
4661 | What matters is not intrinsic value of life or rights, but worthwhile and desired life, and avoidance of pain [Glover] |
4648 | 'Death' is best seen as irreversible loss of consciousness, since this is why we care about brain function [Glover] |
3785 | You can't separate acts from the people performing them [Glover] |
3786 | Aggression in defence may be beneficial but morally corrupting [Glover] |
4650 | The quality of a life is not altogether independent of its length [Glover] |
3784 | Duty prohibits some acts, whatever their consequences [Glover] |
3782 | Satisfaction of desires is not at all the same as achieving happiness [Glover, by PG] |
3787 | Rule-utilitarianism is either act-utilitarianism, or not really utilitarian [Glover] |
3783 | How can utilitarianism decide the ideal population size? [Glover] |
4675 | The sanctity of life doctrine implies a serious increase of abnormality among the population [Glover] |
4654 | Autonomy favours present opinions over future ones, and says nothing about the interests of potential people [Glover] |
4655 | If a whole community did not mind death, respect for autonomy suggests that you could kill them all [Glover] |
4680 | Autonomy seems to acquire greater weight when the decision is more important to a person [Glover] |
4670 | Being alive is not intrinsically good, and there is no 'right to life' [Glover] |
4668 | You can't have a right to something you can't desire, so a foetus has no 'right' to life [Glover] |
4649 | If someone's life is 'worth living', that gives one direct reason not to kill him [Glover] |
4651 | Utilitarians object to killing directly (pain, and lost happiness), and to side-effects (loss to others, and precedents) [Glover] |
4671 | What is wrong with killing someone, if another equally worthwhile life is substituted? [Glover] |
4676 | The 'no trade-off' position: killing is only justified if it prevents other deaths [Glover] |
4685 | Societies spend a lot to save known persons, but very little to reduce fatal accidents [Glover] |
4683 | Involuntary euthanasia is wrong because it violates autonomy, and it has appalling side-effects [Glover] |
4682 | Euthanasia is voluntary (patient's wish), or involuntary (ignore wish), or non-voluntary (no wish possible) [Glover] |
4684 | Maybe extreme treatment is not saving life, but prolonging the act of dying [Glover] |
4681 | The Nazi mass murders seem to have originated in their euthanasia programme [Glover] |
4665 | Conception isn't the fixed boundary for a person's beginning, because twins are possible within two weeks [Glover] |
4667 | How would we judge abortion if mothers had transparent wombs? [Glover] |
4652 | If killing is wrong because it destroys future happiness, not conceiving a happy child is also wrong [Glover] |
4662 | Defenders of abortion focus on early pregnancy, while opponents focus on later stages [Glover] |
4663 | If abortion is wrong, it is because a foetus is a human being or a person (or potentially so) [Glover] |
4664 | If abortion is wrong because of the 'potential' person, that makes contraception wrong too [Glover] |
4673 | Abortion differs morally from deliberate non-conception only in its side-effects [Glover] |
4666 | If viability is a test or boundary at the beginning of life, it should also be so for frail old people [Glover] |
4672 | Apart from side effects, it seems best to replace an inadequate foetus with one which has a better chance [Glover] |
4674 | It is always right for a qualified person to perform an abortion when requested by the mother [Glover] |
4679 | One test for a worthwhile life is to assess the amount of life for which you would rather be unconscious [Glover] |