44 ideas
8729 | Intuitionists deny excluded middle, because it is committed to transcendent truth or objects [Shapiro] |
8763 | The number 3 is presumably identical as a natural, an integer, a rational, a real, and complex [Shapiro] |
18249 | Cauchy gave a formal definition of a converging sequence. [Shapiro] |
8764 | Categories are the best foundation for mathematics [Shapiro] |
8762 | Two definitions of 3 in terms of sets disagree over whether 1 is a member of 3 [Shapiro] |
8760 | Numbers do not exist independently; the essence of a number is its relations to other numbers [Shapiro] |
8761 | A 'system' is related objects; a 'pattern' or 'structure' abstracts the pure relations from them [Shapiro] |
8744 | Logicism seems to be a non-starter if (as is widely held) logic has no ontology of its own [Shapiro] |
8749 | Term Formalism says mathematics is just about symbols - but real numbers have no names [Shapiro] |
8750 | Game Formalism is just a matter of rules, like chess - but then why is it useful in science? [Shapiro] |
8752 | Deductivism says mathematics is logical consequences of uninterpreted axioms [Shapiro] |
8753 | Critics resent the way intuitionism cripples mathematics, but it allows new important distinctions [Shapiro] |
8731 | Conceptualist are just realists or idealist or nominalists, depending on their view of concepts [Shapiro] |
8730 | 'Impredicative' definitions refer to the thing being described [Shapiro] |
8725 | Rationalism tries to apply mathematical methodology to all of knowledge [Shapiro] |
23590 | Criminal responsibility can be fully assigned to each member of a group [Walzer] |
23578 | Double Effect needs a double intention - to achieve the good, and minimise the evil [Walzer] |
23564 | Deep ethical theory is very controversial, but we have to live with higher ethical practice [Walzer] |
23674 | If an attempted poisoning results in benefits, we still judge the agent a poisoner [Reid] |
23675 | We shouldn't do to others what would be a wrong to us in similar circumstances [Reid] |
23672 | To be virtuous, we must care about duty [Reid] |
23673 | Every worthy man has a principle of honour, and knows what is honourable [Reid] |
23568 | If whole states possess rights, there can be social relations between states [Walzer] |
23581 | The aim of reprisals is to enforce the rules of war [Walzer] |
23567 | Even non-violent intrusive acts between states count as aggression, if they justify resistance [Walzer] |
23570 | The only good reason for fighting is in defence of rights [Walzer] |
23571 | States can rightly pre-empt real and serious threats [Walzer] |
23580 | States need not endure attacks passively, and successful reprisals are legitimate [Walzer] |
23587 | Nuclear bombs are not for normal war; they undermine the 'just war', with a new morality [Walzer] |
23588 | With nuclear weapons we have a permanent supreme emergency (which is unstable) [Walzer] |
23572 | Just wars are self-defence, or a rightful intercession in another's troubles [Walzer] |
23582 | Reprisal is defensible, as an alternative to war [Walzer] |
23593 | Jus ad bellum and Jus in bello are independent; unjust wars can be fought in a just way [Walzer] |
23573 | For moral reasons, a just war must be a limited war [Walzer] |
23577 | Napoleon said 'I don't care about the deaths of a million men' [Walzer] |
23614 | Even aggressor soldiers are not criminals, so they have equal rights with their opponents [Walzer] |
23574 | The duties and moral status of loyal and obedient soldiers is the same in defence and aggression [Walzer] |
23575 | We can't blame soldiers for anything they do which clearly promotes victory [Walzer] |
23584 | Rejecting Combatant Equality allows just soldiers to be harsher, even to the extreme [Walzer] |
23589 | Kidnapped sailors and volunteers have different obligations to the passengers [Walzer] |
23586 | What matters in war is unacceptable targets, not unacceptable weapons [Walzer] |
23591 | If the oppressor is cruel, nonviolence is either surrender, or a mere gesture [Walzer] |
23579 | Soldiers will only protect civilians if they feel safe from them [Walzer] |
23592 | We can only lead war towards peace if we firmly enforce the rules of war [Walzer] |