64 ideas
20455 | Philosophy really got started as the rival mode of discourse to tragedy [Critchley] |
20446 | Philosophy begins in disappointment, notably in religion and politics [Critchley] |
6848 | Humour is practically enacted philosophy [Critchley] |
6847 | Humour can give a phenomenological account of existence, and point to change [Critchley] |
7068 | If infatuation with science leads to bad scientism, its rejection leads to obscurantism [Critchley] |
6844 | Scientism is the view that everything can be explained causally through scientific method [Critchley] |
20449 | Science gives us an excessively theoretical view of life [Critchley] |
7075 | To meet the division in our life, try the Subject, Nature, Spirit, Will, Power, Praxis, Unconscious, or Being [Critchley] |
7069 | The French keep returning, to Hegel or Nietzsche or Marx [Critchley] |
6835 | German idealism aimed to find a unifying principle for Kant's various dualisms [Critchley] |
6837 | Since Hegel, continental philosophy has been linked with social and historical enquiry. [Critchley] |
6836 | Continental philosophy fights the threatened nihilism in the critique of reason [Critchley] |
6838 | Continental philosophy is based on critique, praxis and emancipation [Critchley] |
6845 | Continental philosophy has a bad tendency to offer 'one big thing' to explain everything [Critchley] |
6846 | Phenomenology is a technique of redescription which clarifies our social world [Critchley] |
20448 | Phenomenology uncovers and redescribes the pre-theoretical layer of life [Critchley] |
15413 | With four tense operators, all complex tenses reduce to fourteen basic cases [Burgess] |
15415 | The temporal Barcan formulas fix what exists, which seems absurd [Burgess] |
15430 | Is classical logic a part of intuitionist logic, or vice versa? [Burgess] |
15431 | It is still unsettled whether standard intuitionist logic is complete [Burgess] |
15429 | Relevance logic's → is perhaps expressible by 'if A, then B, for that reason' [Burgess] |
15404 | Technical people see logic as any formal system that can be studied, not a study of argument validity [Burgess] |
15405 | Classical logic neglects the non-mathematical, such as temporality or modality [Burgess] |
15427 | The Cut Rule expresses the classical idea that entailment is transitive [Burgess] |
15421 | Classical logic neglects counterfactuals, temporality and modality, because maths doesn't use them [Burgess] |
15403 | Philosophical logic is a branch of logic, and is now centred in computer science [Burgess] |
15407 | Formalising arguments favours lots of connectives; proving things favours having very few [Burgess] |
15424 | Asserting a disjunction from one disjunct seems odd, but can be sensible, and needed in maths [Burgess] |
15409 | All occurrences of variables in atomic formulas are free [Burgess] |
15414 | The denotation of a definite description is flexible, rather than rigid [Burgess] |
15406 | 'Induction' and 'recursion' on complexity prove by connecting a formula to its atomic components [Burgess] |
15425 | The sequent calculus makes it possible to have proof without transitivity of entailment [Burgess] |
15426 | We can build one expanding sequence, instead of a chain of deductions [Burgess] |
15408 | 'Tautologies' are valid formulas of classical sentential logic - or substitution instances in other logics [Burgess] |
15418 | Validity (for truth) and demonstrability (for proof) have correlates in satisfiability and consistency [Burgess] |
15412 | Models leave out meaning, and just focus on truth values [Burgess] |
15411 | We only need to study mathematical models, since all other models are isomorphic to these [Burgess] |
15416 | We aim to get the technical notion of truth in all models matching intuitive truth in all instances [Burgess] |
15428 | The Liar seems like a truth-value 'gap', but dialethists see it as a 'glut' [Burgess] |
10185 | Set theory is the standard background for modern mathematics [Burgess] |
10184 | Structuralists take the name 'R' of the reals to be a variable ranging over structures, not a structure [Burgess] |
10189 | There is no one relation for the real number 2, as relations differ in different models [Burgess] |
10186 | If set theory is used to define 'structure', we can't define set theory structurally [Burgess] |
10187 | Abstract algebra concerns relations between models, not common features of all the models [Burgess] |
10188 | How can mathematical relations be either internal, or external, or intrinsic? [Burgess] |
15420 | De re modality seems to apply to objects a concept intended for sentences [Burgess] |
15419 | General consensus is S5 for logical modality of validity, and S4 for proof [Burgess] |
15417 | Logical necessity has two sides - validity and demonstrability - which coincide in classical logic [Burgess] |
15422 | Three conditionals theories: Materialism (material conditional), Idealism (true=assertable), Nihilism (no truth) [Burgess] |
15423 | It is doubtful whether the negation of a conditional has any clear meaning [Burgess] |
19542 | It is nonsense that understanding does not involve knowledge; to understand, you must know [Dougherty/Rysiew] |
19543 | To grasp understanding, we should be more explicit about what needs to be known [Dougherty/Rysiew] |
19541 | Rather than knowledge, our epistemic aim may be mere true belief, or else understanding and wisdom [Dougherty/Rysiew] |
19540 | Don't confuse justified belief with justified believers [Dougherty/Rysiew] |
19539 | If knowledge is unanalysable, that makes justification more important [Dougherty/Rysiew] |
19538 | Entailment is modelled in formal semantics as set inclusion (where 'mammals' contains 'cats') [Dougherty/Rysiew] |
20454 | Wallace Stevens is the greatest philosophical poet of the twentieth century in English [Critchley] |
20456 | Interesting art is always organised around ethical demands [Critchley] |
20447 | The problems is not justifying ethics, but motivating it. Why should a self seek its good? [Critchley] |
7067 | Food first, then ethics [Critchley] |
6843 | Perceiving meaninglessness is an achievement, which can transform daily life [Critchley] |
20452 | Anarchism used to be libertarian (especially for sexuality), but now concerns responsibility [Critchley] |
20450 | The state, law, bureaucracy and capital are limitations on life, so I prefer federalist anarchism [Critchley] |
20451 | Belief that humans are wicked leads to authoritarian politics [Critchley] |