16 ideas
| 18739 | Three stages of philosophical logic: syntactic (1905-55), possible worlds (1963-85), widening (1990-) [Horsten/Pettigrew] |
| 18741 | Logical formalization makes concepts precise, and also shows their interrelation [Horsten/Pettigrew] |
| 18744 | Models are sets with functions and relations, and truth built up from the components [Horsten/Pettigrew] |
| 18740 | If 'exist' doesn't express a property, we can hardly ask for its essence [Horsten/Pettigrew] |
| 18745 | A Tarskian model can be seen as a possible state of affairs [Horsten/Pettigrew] |
| 18747 | The 'spheres model' was added to possible worlds, to cope with counterfactuals [Horsten/Pettigrew] |
| 18748 | Epistemic logic introduced impossible worlds [Horsten/Pettigrew] |
| 18746 | Possible worlds models contain sets of possible worlds; this is a large metaphysical commitment [Horsten/Pettigrew] |
| 18750 | Using possible worlds for knowledge and morality may be a step too far [Horsten/Pettigrew] |
| 20877 | Errors in moral practice might be inconsistent or inappropriate principles, or inappropriate application [LaFollette] |
| 20878 | We can discuss the criteria of a judgment, or the weight given to them, or their application [LaFollette] |
| 20881 | The act/omission distinction is important for duties, but less so for consequences [LaFollette] |
| 6004 | The cardinal virtues are theoretical (based on knowledge), and others are 'non-theoretical' [Hecato, by Dorandi] |
| 20886 | Are we only obligated by agreement, or should we always help the weak? [LaFollette] |
| 20879 | Too many options may open us to unwanted pressures, like being paid very little [LaFollette] |
| 20880 | Should people be forced to make choices? [LaFollette] |